BMW N62 Engine - Valve Guide Seals causing smoking? Fix in 30 minutes!

If you have the BMW N62 engine in your car - 645i, 650i, 745i or 750i and you are getting problems with blue smoke from the exhaust you have probably been told you need to replace the valve guide seals - and it's going to cost you a lot of money!
But 50% - 60% of the causes of smoke is not the valve stem seals - it's the famous PCV valves (called all sorts of names such as CCV, Check-Valve, OSV and a number of other incorrect names). No, these fella's are PCV's, Pressure Control Valves - and they get stuck, tear and get blocked up - and then your car is going to smoke - badly.
More details of crankcase ventilation problems: www.meeknet.co.uk/e31/BMW_M60...
Replacement parts: amzn.to/2Mm9kPk
This is no surprise to BMW owners that have the M60/M62/M62TUB engines - we are quite used to PCV valves causing smoke - and we've been swapping them out for years. But mention smoke and the N62 and everyone shouts stem seals!
To test crankcase Vacuum use this: amzn.to/2Mjf78x
Genaral Purpose Grease: amzn.to/2MnBkC4
This video shows how to stop your N62 smoking in 30 minutes and around £30 - go on, you know you want to.....
#BMWN62 #ValveStemSeals #EngineSmoking

[@logangsq1480]

Wow finally someone with a real and accurate explanation of a N62 PCV system, very well done man and consider me happily subscribed!!

[@TimmsBMWRepairsandInformation]

Thank you!

[@vassarcokley7857]

How and where can I order that stuff call Forte from and how much is it

[@senioradministrator6510]

You are a champion and are one of the most articulate 650i mechanical experts on the web. I’m inspired! Well done and thank you for your service to the BMW community :-)

[@TimmsBMWRepairsandInformation]

That's very kind of you - Thanks!

[@latashawashington4579]

I have a 2008 650i which was smoking so I took it to the dealership who was going to charge me 8,000 dollars to fix. I watched this video and changed the parts myself and saved me 7,050. Thanks So Much for this video

[@TimmsBMWRepairsandInformation]

Another happy customer - great stuff!

[@WayToManyAssassins]

$8000 your being flastered

[@michaellauts4036]

Many thanks for your easy to follow instructions. This is the first time I had a look myself at the PCV valve. Both of them are broken. Can't wait to see the difference. Many thanks for your help.

[@TimmsBMWRepairsandInformation]

Glad I could help - and give it a good 100 miles or so to clear out!

[@rayrivera3221]

I came across your channel, I have to say you have the most correct and actually explain the repairs well, Thank you Sir !!!! I will be watching, as a new 750Li owner and avid DYIer I appreciate your videos

[@TimmsBMWRepairsandInformation]

Thanks and welcome, hope it treats you well!

[@ruskito2003]

Wow, what an informative video. If I only I knew this info 5 years ago I could have fixed my 645ci. The main dealer told me it needed valve seals and quoted me a silly amount of money to do it. I decided to just buy a new car but I never got round to selling the 645 which has sat on my drive untouched ever since. after 5 years without so much as putting the key in the ignition it probably has far more problems now.

[@andreasvoss4931]

You are doing a great job with your videos. I have a 645ci and both of your BMW's are so clean and spotless under the hood I spend hours on mine....and I didn't care about something like this since my 20s......I am 51 now...keep up the good work...👍

[@TimmsBMWRepairsandInformation]

Thanks, that's very kind of you!

[@ParaACP]

Cheers Tim, just did my spark plugs (645ci) which was an utter pig of a job. While the casing was off I watched your video as my banks were showing lean.. 2x ripped diaphragms. Great video!

[@TimmsBMWRepairsandInformation]

Really glad it helped!

[@ParaACP]

@@TimmsBMWRepairsandInformation 100%, parts on order. Also, vaccumn pump has developed a leak- watched your other video. Again parts in the post, all set to be done this week! :-)

[@justdrive9151]

Just found your channel! Keep up the good work. Very clear video, love to see more

[@TimmsBMWRepairsandInformation]

Thanks!

[@user-es3nx4ic6f]

Extremely well done mate! Thanks for posting!

[@TimmsBMWRepairsandInformation]

Thanks!

[@michaelbitner9910]

Very well done - going out to the garage to get it done on my '07 650i convertible right now. Thanks, Timm!

[@TimmsBMWRepairsandInformation]

You can do it!

[@alisk222]

Excellent video - just replaced both valve diaphragms on my 550i after watching this, they looked in reasonable condition with only a little black gunk present rather than the large deposits you found the first time on yours but at least I know they're done now :)

[@TimmsBMWRepairsandInformation]

Well done, good work!

[@keithninobrown]

i would like to thank u soooo much, i took it to a dealer and he told me $4000 to stop it from smoking. I saw this video and did what you said and NO MORE SMOKE...THANK YOU

[@TimmsBMWRepairsandInformation]

It really is my pleasure - and glad to hear it worked out for you. I am worried that this problem is turning into the 'Nikasil' scare of the M60 BMW V8 where the first sign of smoke would scare the owner into selling or scrapping. Just like the valve guide problem there were so few real cases of bore-wear and lots of cases of PCV failure.

[@j.kisart6100]

Hey how long did it take your car to stop smoking after the change?

[@TimmsBMWRepairsandInformation]

Around 100 miles or so

[@j.kisart6100]

Timm's BMW Repairs and Information I have a 2012 750 with the N63 and I can’t find the ccv orange colored valves at all

[@TimmsBMWRepairsandInformation]

@@j.kisart6100 Very different system on the N63 engine - the system can be found here: www.realoem.com/bmw/enUS/showparts?id=KA83-USA-02-2011-F01-BMW-750i&diagId=11_4171

[@REKshopS8]

Doing this tomorrow on my 550. Thanks from the US!

[@TimmsBMWRepairsandInformation]

Good luck!

[@alextorkelson]

Did changing out PCV resolve your issue at all?

[@richardhoff5255]

Very nice video. I don't own an 850 but I still found this soothing to watch.

[@TimmsBMWRepairsandInformation]

Thanks!

[@LS-uv5jf]

Excellent, easy to understand narration and video! Very knowledgeable too of N62

[@TimmsBMWRepairsandInformation]

Much appreciated!

[@accuracychannel.7242]

Thanks a million. will try it out.. Mine done 187000km and just started smoking.. And as it goes, BMW says change the stem valve seals.

[@TrevorS38]

E34 M5 owner looking for a fun daily driver while the M5 goes under the knife. Started looking into E63s and got here. Great video! I also like the Style 21s as the channel icon!

[@TimmsBMWRepairsandInformation]

Yes, E63's and E64's are great fun - and by the way, the E64 accelerates quicker - it has a shorter diff!

[@philipgorin6676]

I changed the 2 CCV valves and breather hoses on my bmw 745i e65 with 167k miles on, and now finally car stop blue smoking and the engine is like reborn: have much more power like was a new car. Thanks from Russia!

[@TimmsBMWRepairsandInformation]

Thanks for letting us know - we always like to have feedback as it helps to work out just how many cars have stem seal problems and those that are simply PCV problems!

[@mikesherwood5497]

Great explanation, very helpful and well explained

[@joshhamilton2987]

Excellent video! Definitely deserve more love on youtube for this amazing content!

[@TimmsBMWRepairsandInformation]

Thank you so much Josh 🤗

[@carlacordner4210]

Absolutely loved that video. Some real good practical info. I even had a light bulb moment. About 6 months ago I changed my Vac hoses and replaced the top front one with a pcv upgraded version. I didn’t however blank off the valve cover CCV. So I now have a CCV on each valve cover and an upgraded pcv, when installed I had to re-adjust my idle with Ista d as it went over 2k rpm. Not long after I noticed 2 error codes 2820 and 2821. These relate to differential servo motor and differential/cam sensor. After checking my crankcase pressure with a manometer it read around 20-28mbar. Could this under pressure in the crankcase cause these faults ? Appreciate the info and any advice on this issue. Thank you.

[@BAC_Mono]

Thanks Tim, your site is a goldmine of useful (and money saving) information. I've checked my PCV's (they were ok), replaced the halo and dipped beam bulbs, replaced the sagging trunk struts and changed the oil, air filter and cabin (micro) filters saving ££'s in the process! As you say the 650 really is a lovely smooth GT car, and doesn't have to break the bank even if the valve stem seal do go eventually.

[@TimmsBMWRepairsandInformation]

Thank you, yes, valve stem seals are a problem - but it isn't a forgone conclusion if you change oil regularly.

[@user-ci4cj5eq4x]

this information piece is gold. subscribed to many future videos

[@TimmsBMWRepairsandInformation]

Thanks!

[@Enthusiast_Plus]

Yup this cured the very minimal smoke I was getting out of my X5 4.8iS

[@TimmsBMWRepairsandInformation]

That's great news - and thanks for passing on the information as it helps us all.

[@estramboticoarcano8029]

I just noticedthe same problem in my X5 4.8 purchased two months agoI'm getting my CCV tomorrow I really hope it's that. My first BMW probably my last. I'll gp for Mercedes I owned 1999 for 11 years C280 with no problem but regular maintenance sold at 240miles still running like a charm. BMW'S are little over engineer. I replaced one suspension air bag, Heather control valve and I have the seat restraining sensor bad. Bad rear backup camera at night. Ultimate driving machine I doubt it now. Anyway I'll hope for the best.

[@Enthusiast_Plus]

@@estramboticoarcano8029 Well these are common issues for this chassis. It's also the first generation X5 so BMW definitely had to work out the kinks but overall its a fantastic SUV. I've owned numerous BMWs and for the most part they are all dead reliable.

[@champspec]

Those diaphragms tear very easily. Especially aftermarket rubber valves. I’ve had 3 550i’s with n62 engine. Never replaced the valve stem seals and I fixed the smoking issue in all of them. A trick to keep the oil out of the engine is to add a 1-3mm rubber disk on the top of the flapper valve. Make sure the disk is smaller than the inner circle of the rubber flapper. And make sure the rubber is clean and seals on the edge. This will keep it from opening so easily to keep the oil out. Also make sure the pinhole on the plastic cover is not blocked off.

[@knightrider3766]

where can I buy this disk?

[@haldoglife]

Sold my E60 550 because it was smoking like this. Loved that car, now I know.

[@abcfisher1]

Excellent video. I enjoyed it. Beautiful engine bay as well. I have a 2008 550i and I have replaced the PCV valves also. I do have a little smoke after long idles but here in the US I have found a product called AT-205 reseal which helps alot with worn seals to rejuvenate the rubber on the valve stem seals. I didn't realize that you can wash and clean the PCV system periodically so I will do that from now on. I got the car at 100k miles. No smoke. Started changing the oil less frequently and started smoking. I love this motor and the torque it produces. I am a subscriber. Thank you!

[@TimmsBMWRepairsandInformation]

Thanks!

[@coldbay2005]

Excellent video and explanation. Going to see if you have one for the N63.

[@TimmsBMWRepairsandInformation]

Thanks John, I've never owned an N63 so no need to search!

[@dukedub]

Nice video. Thank you for taking the time to explain.

[@TimmsBMWRepairsandInformation]

Thank you!

[@forzaferrari9912]

Did that today. The diagnosis in my case is harsh... But this was super useful video anyway.

[@TimmsBMWRepairsandInformation]

It was kind of you to post after your bad luck - certainly shows some backbone - thanks!

[@honestrunescaper]

So glad I found this channel

[@TimmsBMWRepairsandInformation]

Glad you came here!

[@BLAZENYCBLACKOPS]

I’m so glad I found this video, my 2008 BMW 550i started smoking a few months back and I’m super concerned that it’s the valve stem seals, I’ll definitely give this a shot first before hand and see what happens, absolutely worth it considering that the PCV’s have more than likely never been replaced, thanks a million.

[@TimmsBMWRepairsandInformation]

My pleasure! It works on at least half of the smokers!

[@douglasdorman9322]

@@TimmsBMWRepairsandInformation MINE REPLACED, DROVE, ECT, STILL SMOKES, VALVE STEM SEALS BAD, FUCK IT, GOT MANY ISSUES WTH MY SUPER CLEAN MSPORT550I, NOW MY TRANSFER COOLANT PIPE SEAL IS GONE, LEAKING SLOW COOLANT, WHICH IS GOOD,BUT, THATS A 24HR JOB, AND A PINION SEAL IN THE REAR END, CALLS FOR 9.0 RR!!!!! WONT PASS SMOG,, GONNA DRIVE IT DAILY AS USUAL KEEP WATER AND COOLANT IN, TURN UP THE KICK ASS STEREO, AND IGNORE THE NOISE... LOL... FUCK IT, PROBABLY 6,000 DOLLARS , SHIT MORE, TO FIX THIS BEAUTIFUL CAR THAT I LOVE.. MAN THE INTERIOR IS SO SWEET, HANDLING, ALL THE ELECTRICS ARE PERFECT, EVERYTHING BUT, THE TEARS OF A CLOWN, STORY, REALISTICALLY, MORE LIKE 7 GRAND TO FIX THIS SHIT, THAT COOLANT PIPE IS THE DUMBEST ASS THING I HAVE EVER SEEN, YOU HAVE TO TAKE THE WHOLE FUCKING ENGINE APART TO FIX IT, AN O RING.... AND A 200 DOLLAR PIPE... THAT JOB CALLS AGAIN FOR 24 PLUS HRS!!! LOVE THE BMW... GOT 165 ON IT MILEAGE, SO ITS DONE ITS JOB I GUESS...

[@fredb711]

Thank you for a detailed and easy to understand explanation of the issue as well as easy to follow procedure. Very well done. Your car is very clean. What year and mileage of you don’t mind me asking? Subscribing to the channel.

[@TimmsBMWRepairsandInformation]

My pleasure! I'm around 120,000 miles on a 2007 plate - more info here: www.meeknet.co.uk/E64/2007_E64_650i_Sport_Individual.htm

[@alvintobe5566]

Hay Timm this is Alvin, I have the 2005 645ci, coming up on 50,000 miles. Can you recommend any Preventive maintenance repairs I should be looking into.

[@youtubersnewsandreactions8091]

Great content I have a 08 X5 with the 4.8 N62 will check the PCV vales tomorrow to diagnose the same white smoke issue wish me luck .. Oh and I just Subbed !!

[@TimmsBMWRepairsandInformation]

Thanks Kamran, good luck!

[@alanw5812]

I heard once was that PCV valve leak, it will made some vacuum leak noise from the top of the PCV cover vent hole,put finger to block the hole can stop the noise.

[@MrKnightmeister]

Hi Tim, delighted to see you have a KZbin channel. I spent a lot of time on your site when I had an E38. My 750 (N62) is smoking when throttle is applied, after idling. Do you think that could be the PCV (I haven't checked their state yet) or given its after idle, I'm guessing more likely valve seals? Glad to see this is in a saner position than the M62. Thanks again!

[@TimmsBMWRepairsandInformation]

The PCV's are so easy to change just give it a go - and then drive a hundred miles or so and see if it makes a difference.

[@erikstottlemyer3883]

Excellent!! Saved me 8400 usd Thank you!

[@TimmsBMWRepairsandInformation]

Glad it helped!

[@cigar-man6991]

Was a little hesitant on getting e63 coming from an n54 335i. But this video makes made me feel better about the v8. Makes the v8 look like a Toyota engine compared to the n54. 💤🛌

[@TimmsBMWRepairsandInformation]

Thanks!

[@jorg1984]

Thanks alot timm! Very nice video again, keep up the good work. I have a question about the vacuum measurement. You do that via the oil dipstick ? And should all n62 v8 have a value between 30 and 40? I'm asking because I have a bmw e53 4.8is which has the n62b48 engine.

[@TimmsBMWRepairsandInformation]

Yes, somewhere between 15 - 40 mBar

[@brenglover72]

In the UK you can get valve stem seals replaced for £1k nowadays. I had them replaced on my e60. I asked for the old ones back - they were little better than useless - rock hard and the holes for the valve stem were considerably enlarged

[@TimmsBMWRepairsandInformation]

Thanks Brendan, yes, a few places are popping up that do it sub 1k - hopefully I will never need them!

[@rickeyreed4626]

Thank you kind sir.

[@TimmsBMWRepairsandInformation]

My pleasure!

[@danielb8288]

How long after cleaning out (or replacing) the pcv’s did the smoking completely stop? I found significant gunk in bank 1, and have cleaned it out fully... just wondering how long it will continue to smoke for (gunk/ oil elsewhere in the system mate work through)...

[@alanw5812]

I don't know who design the new models, the PCV are part with the rocker cover,but on some look the same can just replace the round seal on top.

[@advhawk6455]

This Yank is subbed. Thank you, Timm.

[@TimmsBMWRepairsandInformation]

My pleasure!

[@arjunmahendran1704]

Attempted this myself over the last couple of days. The crankcase breather was so brittle it broke when I tried to take it off! Unfortunately any of the non OEM versions were going to take far too long to arrive so I had to go to the main dealer and pay BMW prices :(. New part fitted now though with new pcv valves on as well. Now just to sort the total oil loss….

[@TimmsBMWRepairsandInformation]

Well done for giving the job a go!

[@upthepole]

Learned a lot from this video, thanks Tim. Passed this video on to the daughter who has this problem on a X5 4.8 in New Zealand. Would this cause an erratic idle also when warm. Thanks.

[@TimmsBMWRepairsandInformation]

Thanks! Yes, popped PCV's cause engine running problems, especially on tick-over.

[@AngelRojasSpaConsultor]

Eres un genio gracias por tus vides, en en n52 cuando saca humo al subir 3000 rpm, el problema es la pcv ? gracias de nuevo

[@TimmsBMWRepairsandInformation]

¡Sí, es muy probable que lo sea! Son un problema en todos los modelos.

[@stevewilke3752]

Thanks for the excellent video! Checked my PCV valves today and they were intact but I was surprised how soft the rubber was. I expected it to be a little more rigid so was wondering if that is normal or a sign they are near the end of their effectiveness? There was a tiny bit of that yellowish sludge on both sides but nothing like what you showed in your video.

[@TimmsBMWRepairsandInformation]

Thanks! Probably still worth replacing them and scrubbing out the pipework and valve cover just in case - and yes, they are floppy!

[@herold30]

Nice Vid.... Thx... For your great Job.

[@TimmsBMWRepairsandInformation]

Thanks!

[@truckatadders]

As an ex BMW dealer tech, I've changed a number of the OSV diaphragms on the rear of the inlet manifold on M60/62 engines, usually for poor idle quality though 👌

[@bu5761]

Are OSV diaphragms different than the valve cover pcv valves? I'm trying to diagnose this smoke situation 😑 I've been watching mine blow smoke at red lights for a year and I'm about to get into the repair. Shits embarrassing. And mines a convertible so I just want to slouch down onto the floor if I have to stop for a long light. The longer it sits idle, the more smoke it produces on take off. My buddy said it's the 'rings' and reading through these comments, sounds like it could also be valve stem seals? Same thing, or? I just blew up the ccc (nav screen) apparently as well from jumping it. What a pain. Checked the fuses and can't find any blown (trunk and glove box). Bout to take out the dash panels and ccc to see if there's a fuse on the back of it or something, last resort before just replacing it. Radio still works but the screen never lights up anymore, weird. I tried to reset it, pushing the volume control and both eject buttons.. nothin.

[@davidrichardson6528]

Hey Darren I currently have the m62tu and can't seem to keep it from dying as soon as I start it up. When I unplug the MAF sensor it idles but very poorly but when I plug it back it in it does and even after replacing it still the same problem

[@truckatadders]

@davidrichardson6528 one way to check is once the car's running, if you remove the oil filler cap, the car should start running with a very poor idle, if it doesn't make any difference then it's a good indication that the osv diaphragm is faulty. One other way to check is if you spray some brake cleaner around the area where the osv is located, if the engine revs flare up as you spray it, it's another good indicator that the osv diaphragm is faulty, which, on an older car they tend to do. Heat makes them hard & brittle & they eventually split.

[@truckatadders]

@bu5761 when I was in the trade, we would always look at the cheapest option 1st. Replacing the PCV valves & the OSV diaphragm are a much simpler & cheaper repair than stripping the engine. If it were the rings, it wouldn't just do it when stationary at lights but would also do it when driving down the road.

[@jayobama9582]

Thanks very much for the information. Great demonstration. My E63 650 has the SMG gearbox. Is the dipstick that you pulled out on the driver's side to measure vacuum for the engine oil? My dipstick states AT4 on the bottom so thought it was for the SMG manual gear oil?

[@TimmsBMWRepairsandInformation]

Yes, the disptick I removed is for engine oil - I can't see it would be any different on an SMG-equipped car, but you never know!

[@jayobama9582]

@@TimmsBMWRepairsandInformation I checked it again and it says AT4 on the dipstick end no ATF4 - my mistake. It does instead smell like engine oil too. Thanks

[@haluktutuk]

Hi Timm, very useful video. Thanks for sharing. Can you share the link for the rubber adapter extension from the manometer to the engine dipstick please? I couldn't find it anywhere. Probably cannot search with the correct keywords.

[@TimmsBMWRepairsandInformation]

Hello Haluk, I got it with a vacuum gauge like this one: amzn.to/3H1lHJb

[@johns818]

FYI the flex tube ALWAYS has cracks in it, and if for some reason it doesn't.. it will once you start moving it around. If you're in a hot climate like California you need to 100% replace that flex tube.

[@TimmsBMWRepairsandInformation]

Thanks James!

[@andrewfinch3422]

Hi Tim. Just discovered your fab channel. Helped me get my dipped headlight working again without removing the bumper 👍 On the PCV video could I ask how exactly you connect the manometer to the dipstick tube please ?

[@TimmsBMWRepairsandInformation]

Well done Andrew!

[@davidmckean7274]

Hello Timm. I love your videos! Very helpful indeed. I have owned a 330ci Convertible and I am now interested in a 2006-2010 650i convertible. Here is my question. When I inspect a potential 650i convertible, if it does smoke, is there a quick way to tell if it is the PCV valves or if it is the dreaded valve stem seals? I of course will follow all of the steps in your "How to buy a good 650i" video/. Thanks so much, David

[@TimmsBMWRepairsandInformation]

Just don't buy it if it smokes - just not worth the risk!

[@davidmckean7274]

@@TimmsBMWRepairsandInformation Thanks so much Timm! If it smokes or shifts hard, I will just walk away.

[@kmlumd44]

I checked both seals. It aint that on my n62. Also. Over time my oil gets low and my coolant needs refilled. U think i need new head gaskets?

[@carlosb6205]

I replaced these as a preventive measure. My exhaust was not smoked when I did it. After the install the exhaust began smoking. What does this mean?

[@lecorriekenerson7635]

Hi Tim! Great Video! I have a 2007 BMW 650i. Im having trouble with the vanos system. Rough start and idle poor acceleration and misfires. Should i replace the entire vanos system or just clean the solenoids? BMW quoted me a price $4000 to repair it! Please help. No info anywhere that helps me!. Thanks in advance!

[@TimmsBMWRepairsandInformation]

Hello Cory, your best bet is get onto either Bimmerforums.com or .co.uk in the 6-Series sections - it is a much better place to go into some depth. But first, get INPA and have a look at the error codes - very cheap these days and saves a lot of guessing: kzbin.info/www/bejne/eXPJqnZ_qbR9fpI

[@nazihsouliman4689]

Is there a simple way to differentiate if the CCV or valve seal are the cause of the smoke?

[@Dblock-gv9df]

Great video are you a school teacher your explanation is perfect

[@TimmsBMWRepairsandInformation]

Thanks! No, I'm an engineer!

[@mikesherwood5497]

@@TimmsBMWRepairsandInformation That is obvious, very logical, organised, well planned sequenced work, well done you !!

[@alvintobe5566]

Hi Timm this is Alvin, 1 of your best supporters. I have a question: I have 2005 645ci. Everything is working perfect, thank God. Should I used a value stem seal conditioner, to keep them soft. Before they get hard? I'm asking for Preventive maintenance.

[@TimmsBMWRepairsandInformation]

Hello Alvin - yes, I see your comments on my channel all the time! No need for anything other than 10,000 mile / 1 Year oil changes with Castrol or other name brand fully-synthetic oil - and you will be fine! Good hearing from you.

[@alvintobe5566]

@@TimmsBMWRepairsandInformation Hay Timm thanks again for all your great videos. I have the 2005 645ci with about 50,000 miles. Is there any Preventive maintenance repairs that I should be doing or looking into.

[@MrCastellanos13]

Great Video! Changed the valves and still smoking. What did you use to clean the valve cover? You said 5amp flex. Is that just a piece of electrical wire? Should I just shove it in the hole?

[@TimmsBMWRepairsandInformation]

Yes, I used 5A flex - but a bendy, long brush would probably have worked a lot better. Remember to give the car a good 100 miles after doing the work, it takes a while for the oil to work through.

[@BLAZENYCBLACKOPS]

If the smoking doesn’t stop after a good amount of time you’ll probably have to replace the valve stem seals , and like he said early in this video it’s no cheap job. They sell a kit where you can replace the stem seals yourself but it takes 20 hrs of labor and you’ll obviously need more time than that if you’re not mechanically inclined, but you’ll save a load of money and your engine in the process.

[@TimmsBMWRepairsandInformation]

I agree, as I said, changing the PCV valves fixes a good 50-60% of smoking cases, but failing valve stem seals is a real problem, and an expensive one to fix. But I would always recommend changing the PCV's first as it is so cheap and easy - and don't forget to clear out the piping and valve cover as much as possible. To avoid have having valve stem seal failure change your oil every 10,000 miles and use a decent oil.

[@joeruiz784]

Timm's BMW Repairs and Information what is that u use to clean in hole don’t want to mess anything up

[@gabrielireyesvergara9539]

Hi Timm I have a 2006 750li just star smoke is the same engine on the one you work on the video

[@TimmsBMWRepairsandInformation]

Well, you know what to do first!

[@alextorkelson]

Any updates at all?

[@TimmsBMWRepairsandInformation]

@@alextorkelson Update: My 650i is still not smoking after another 3 years...

[@jessepickar3297]

I tried this and it started smoking again. I didn’t really clean it out tho so that could be the issue. I’m also leaking coolant so I’m just hoping it’s this and not a head gasket

[@andrewthompsonuk1]

The N62 would be a good motor if the oil was changed twice as often as BMW want.

[@TimmsBMWRepairsandInformation]

I agree with that - and use decent oil!

[@lavazza8031]

@@TimmsBMWRepairsandInformation castrol titanium ou mobil 1

[@lavazza8031]

il est très bon quand même en europe

[@AdamA63]

Hi Tim, this channel is great. I was rapidly burning oil and smoking away at the lights. I checked the PCVs and all ok but I changed them anyway. I then added eight tubes of Forte seal conditioner into the engine and the oil burning has massively reduced. Pretty much back to normal now. However, I am still smoking when stopped at the lights. Any ideas? I have a 4.8i V8 N62 engine. After about twenty mins of driving the smoking is not as bad but still present.

[@TimmsBMWRepairsandInformation]

There is no doubt that the stem seals DO fail, all dependant on past servicing - but doing the things you are doing will minimise the problem to somewhere that can be lived with!

[@AdamA63]

@@TimmsBMWRepairsandInformation I think it is water vapour - loads of it. I checked the exhaust inside and could see loads of water droplets. Once the droplets are no longer visible then there are zero visible emissions. I am shocked by how much water vapour has to come out of the 4.8i V8 at this time of year.

[@alextorkelson]

Any updates at all? Curious how things turned out.

[@andy545i]

Thx👍my 09/2004 545i has both those PCV rubber valves on the head rather than the external setup. Why is this? Anyway I changed them although the originals looked ok - I still have I bit of smoke when I start the engine but goes away after 30 sec or so - also a bit of rough idle (rpm are rock steady, just rough for some reason)…

[@TimmsBMWRepairsandInformation]

Try some Wynn's Stop Leak, if that reduces the oil burn then it is probably Stem Seals, but the Wynn's will help

[@andy545i]

@@TimmsBMWRepairsandInformation thx mate, what about Forte seal conditioner? Got a couple of those laying around in my garage but never used them. I guess I’m worried about additives…what’s a good way to test for definitive smoke prob? Idle for a some minutes and rev up?

[@longmoormilitary-railway7620]

Yes, use the Forte Seal Conditioner, it's good stuff

[@surajminhas711]

I'm wanting to buy a 545i e60 or 750i e66, thanks for this information im now comfortable buying these cars, if my valve stem seals go, I will be doing my own repairs and one more question...how long do stem seals last in the n62 and the pcv valves?

[@TimmsBMWRepairsandInformation]

With good maintenance the stem seals can last a good 200,000 miles - PCV valves usually tear after 10 years or so

[@surajminhas711]

@@TimmsBMWRepairsandInformation alright 👌 thank you, BTW I'm a proud owner of a bmw 545i...vehicle used bmw coolant and had its oil changed every 8000kms

[@surajminhas711]

@@TimmsBMWRepairsandInformation keep continuing to make great content

[@gamerz8541]

Hi Timm, I have just bought a bmw 540i so the 4.0 n62, and on cold starts will smoke white on idle (I don’t believe there’s a blue tint to it) and when revved which won’t disappear until driven for a couple miles and won’t smoke on idle until left to sit again. After it being fully warm at operating temperature, I can turn it off and leave it to sit for 5 minutes and the smoke issue on idle will be back again until driven. I’ve replaced the pcv seals like indicated in the video and one was in fact cracked. However it’s been a week now and there’s still no improvement. I’ve also tried cleaning the pcv pipes but it still seems to collect oil that is a white kind of colour. Have you any ideas of what it could be? Im hoping it’s not the dreaded valve stems seals, I left to idle for 10 minutes after driving and warming up and revved and there was no smoke. I think it’s brilliant how you’re still helping and advising people on this video after years, I look forward to hearing your response many thanks!

[@TimmsBMWRepairsandInformation]

Before giving up give the car a good blasting to clear the oil from the manifold, sometimes it can take a good 100 miles to clear the oil.

[@pauldean5069]

Hi tim i have a 2006 650i with just over 60k on the clock it has full stamped history in book bought it five years ago from someone who had it for ten years it was fine at first but after two years it started smoking after idle i changed pcv valves but still have the problem

[@TimmsBMWRepairsandInformation]

Try cleaning out the valve covers Paul - that made a huge difference on mine.

[@pauldean5069]

@@TimmsBMWRepairsandInformation hi tim ive just bought some wynns stop smoke im dubious about using this treacle in my car to try stop the puffs of blue smoke after idle have i bought the wrong additive or do you think it could be ok

[@alexandermcleanbarclay9266]

Can you supply a link for the P.C.V valve to get the correct one thanks in advance E63 650CI

[@TimmsBMWRepairsandInformation]

Hello Alex, buy it directly from BMW, part number 11127547058 as seen on this diagram: www.realoem.com/bmw/enUS/showparts?id=EH72-EUR-03_2003_E63_BMW_645Ci&diagId=11_3258#11127547058

[@MegaNewman2011]

Hi Tim, having trouble with my 05 x5 4.4 n62 with hesitation on light acceleration and very small amount of smoke on start up, possible ccv and have you any knowledge on the ivm on these motors or integrated supply module all my symptoms are leading me to this module, thanks in advance

[@TimmsBMWRepairsandInformation]

Always best to start here with these kinds of problems: kzbin.info/www/bejne/eXPJqnZ_qbR9fpI

[@BoredAtWork2000]

What pressure would you see if you had done that test prior to the PCV replacement? Curious if you can determine if it’s the PCV or valve seals.

[@TimmsBMWRepairsandInformation]

The pressure (or vacuum) can be wildly different if the PCV's are blocked or split - but anywhere between 15-45 millibars and all is good. However, even with the correct vacuum you can have a build-up of gunk in the valve covers that will cause smoking problems. The PCV's are so easy and cheap to replace that replacing them is the easiest test!

[@mohsinmalikuk]

Hello Mate, need some advice. I have a e90 2007 318i. Smoke on start up and at traffic lights. Wanted to change pcv, but was sent wrong part from ebiy. So mechanic ‘cleaned’ the pcv and hoses. They were filled with hard solidified pieces of oil/sludge. He then put it all back on. It is still smoking. Took car to bmw, they said they have no idea why it is smoking, charged me £200 to tell me this. They said they can open up the rocker cover/ head and maybe diagnose problem, but will charge me to do this. Should I ask them to replace the pcv/oil seperator and all hoses? Before i venture into possibility of stem seals? Also as the current pcv was filled with solid oil, should I ask for the hoses that the pcv hoses go into to also be replaced? So, the pcv has 3 hoses. They go into the pcv, the other end of the 3 hoses go into 3 parts of the car, are these parts likely to also be clogged? Should i replace them also? Or should I go straight to the stem seals? I would appreciate any advice you can give please.

[@TimmsBMWRepairsandInformation]

Unfortunately oil sludge, especially where it has solidified, usually means it wasn't serviced in the past. I would start with replacing the PCV system and hoses and get an oil-service with a fully synthetic oil - and then cross my fingers!

[@mohsinmalikuk]

Timm's BMW Repairs and Information nice one. Having that done tomorrow, pcv, all hoses and return pipe back to sump all being replaced. After this is all done, should the smoke stop immediately or does it take abit of time? As in, if there is still smoke afterwards is it because residue is clearing out or because there is a still a fault with the stem seals/pistons?

[@shannehasvlog8039]

Hi, my BMW Gran Tourer 2L Diesel, suddenly coming white smoke to the exhaust. Please advise me what to do. Kind Regards,

[@TimmsBMWRepairsandInformation]

It depends on the weather conditions whether you get white smoke - what's the ambient temperature?

[@RafaelSil-UK]

White smoke upon hard acceleration from a BMW 5 series Gran Turism 4.4 550i V8. What do you think is the cause of it? Please. Thank you.

[@TimmsBMWRepairsandInformation]

White smoke can be just steam in certain weather conditions

[@smell5118]

I have an 2013 BMW 750lix drive it was smoking I change my pvc valve myself and no more blue smoke On the left side of the engine it was broken the right one was not broken but full of stuff I paid I little bit more I went with bmw parts full warranty no more blue smoke

[@TimmsBMWRepairsandInformation]

That's great news, well done!

[@tsepxes]

Hi Timm, great info as usual. What do you use as the bung on the end of your manometer tube?

[@TimmsBMWRepairsandInformation]

Thanks! It was an accessory that came with a standard vacuum gauge - they sell them as separate items on Ebay

[@arko2094]

Could the stem seals be causing blue smoke

[@rwebster7923]

Hi Timm, i have a question on the E31 headlight wiring degrading at the headlight unit on both lights. Can i message you for some advice please. Thanks Rick Webster.

[@TimmsBMWRepairsandInformation]

Hello Richard, yes, the headlight wiring does tend to fall apart. A guy called Max Lumens on Bimmerforums.com 8-Series section used to make and sell them, so try him first. If you have no luck then you will have to repair them yourself - use the same method as used here: kzbin.info/www/bejne/mpLTq3trbKmMjNE

[@redmaxxnews2414]

How'd you clean the valve cover with 5amp Flex??? I want to try it but not sure what was happening there. Please and thanks!

[@TimmsBMWRepairsandInformation]

A long bottle-brush (the ones with the twisted wire core) would do a much better job - I'll give that a go next time! The valve covers have the oil-separator cyclone devices built into them - if they get covered in much they don't work and oil gets past them - hence the need to clean them out.

[@darksushi9000]

Hi Tim, where can I buy the tube with dipstick seal to connect to my manometer?

[@TimmsBMWRepairsandInformation]

You can find them on Ebay - mine came from my Sealey mechanical vacuum gauge kit

[@Bigldagreat1]

@@TimmsBMWRepairsandInformation is there special tools for this fix?

[@huskypup3489]

Is there a distinction between continuous smoking vs. smoke coming out after a long period of idle? My 07 X5 4.8i only smokes after idling for 3-4 minutes, then revving the engine; then no more smoke. Before the PCV fix, did your car smoke continuously, or only after a long idle+ high revs like mine?

[@TimmsBMWRepairsandInformation]

The best way is to always change both PCV's, clean out the pipework and then give it 100 miles - if it keeps smoking it wasn't the PCV's!

[@IWTBF]

Hi Timm. Any tips for a e46 318ti stem seal replacement ?

[@TimmsBMWRepairsandInformation]

My advice would be to check your PCV valves first and try to avoid VSS replacement!

[@IWTBF]

@@TimmsBMWRepairsandInformation what are those (stand for) and what to look for?

[@pascalgranjeon803]

Hi Tim . I have X5 E70 4.8 2008 and he smoke by both exaust when the engine is hot and when I m in a traffic , also the engine smell oil burning ! What do you think ? Thank you for your return

[@TimmsBMWRepairsandInformation]

Do the PCV's, leave it for 100 miles or so - and then follow this advice:kzbin.info/www/bejne/i6vGaqmHfNqBpM0

[@pascalgranjeon803]

@@TimmsBMWRepairsandInformation Okay Tim , I will do . Thank you for your time . I will let you know ..

[@damonlloyd74]

I just changed them out. Found them both to be torn. The one on the front had a ton of oil in it, but the other one was clean. Problem is, my car is smoking now where before it wasn’t.

[@TimmsBMWRepairsandInformation]

Don't panic just yet, what is probably happening is that there is oil in the labyrinth (in the valve covers) that is being drawn out and the smoking will clear when that oil is dragged out.

[@damonlloyd74]

Crossing my fingers! Thanks for the informative videos btw!! Cheers.

[@alextorkelson]

@@damonlloyd74 Have any luck at all? With the smoke going away

[@damonlloyd74]

It did do it for a bit here and there, but I added a product to thicken up my oil and I haven’t had any issues as of late.

[@alextorkelson]

@@damonlloyd74 Oh brilliant! Never would've imagined. Heard that there's an oil additive one can add to semi-restore old seals too.

[@destroyer6867]

Mine are intact.. need to do the valve seals sadly. Would you recommend me a valve seal brand? Thanks in advance!

[@TimmsBMWRepairsandInformation]

My pleasure, and BMW - they have improved them so they don't fail so quickly!

[@destroyer6867]

@@TimmsBMWRepairsandInformation BMW will be! Thanks!!!

[@carlospasos5432]

Positive crankcase ventilation valve

[@TimmsBMWRepairsandInformation]

Pressure Control Valve www.meeknet.co.uk/e31/BMW_M60_M62_M62TU_Engine_Crankcase_Ventilation.htm

[@NilsJakobson]

Only if you had any clue that N62 engine does not have any serious vacuum in the intake once the car has warmed up and switched to Valvetronic (that is if its still capable of switching to Valvetronic mode at all). Sure the PCV system must be checked before assuming valve guide seals or scored cylinders but there is very good reason why almost everyone ends up doing the valve guide seals. And even then the real cause of the problem does not get repaired. The leaking valve guide seals are not a cause but rather a consequence of a deeper problem which is worn valve guides. And that basically means an engine rebuild.

[@TimmsBMWRepairsandInformation]

Hello Nils, I will have to disagree - firstly take a look at the other comments below, there are quite a few who have replaced the PCV valves and lost the smoke problem - not only here but on the forums. Your take on the problem is in the mainstream and the purpose of this video is to show that there is an alternative to scrapping cars with N62 engines! Lack of a decent vacuum in the manifold does cause other problems as described here: kzbin.info/www/bejne/pWOXoGCjjrNnpbs

[@NilsJakobson]

@@TimmsBMWRepairsandInformation 6 months later when you will be posting another video from your security cam showing smoke puffs and then you will keep blaming PCV system again? I dont know how many miles you have on that car, if less than 100k then you still could be fine but I guarantee the blue smoke is going to come. I have two cars with N62 engines I know what I am talking about. I am doing a complete engine rebuild on one of them and the valve guide wear at 160k miles is worse than any older BMW engine I have ever had. These engines are POS and if you want to have one that works great you will need to rebuild it. All your PCV worries will look like joke after that.

[@TimmsBMWRepairsandInformation]

@@NilsJakobson Hello again Nils, these sort of problems are exactly what this channel is here for - to help stop these problems happening in the first place. It sounds like you have had some bad luck - but spend a little time reading the comments on this video and the other video's on the channel and you will hear from many happy owners of cars with the N62 engine. I have owned a 2007 650i for 6 years and am heading towards 130,000 miles (I always buy high-mileage cars) - compared to my other cars E31, E32 and E38, the E64 has been the most reliable. I certainly don't think the N62 is a POS, except where they are not looked after - and that means regular (1 year at the most) oil changes - if these are missed or were missed before your ownership then you are going to have many problems. And that is the aim of this channel - I'm sorry you had problems but there are so many happy owners here!

[@mikesherwood5497]

Tim how many tubes of Forte Seal Conditioner are needed you think? They are 125ml each i think

[@TimmsBMWRepairsandInformation]

I would go for 3 for the 650i

[@mikesherwood5497]

@@TimmsBMWRepairsandInformation same for 550i ???

[@HomeAmongTheWise]

Hey Tim I have a 2004 Bmw 645ci and all the buttons on the A/C stopped working and it just blows hot air. Any ideas? Thank you so much for your time and help

[@TimmsBMWRepairsandInformation]

Stick the problem on Bimmerforums.co.uk and I'll have a think!

[@HomeAmongTheWise]

@@TimmsBMWRepairsandInformation Hey Tim thank you for your reply, I found the problem; the ac belt is gone lol. Thank you for your time=)

[@fatboyslim7955]

I have a 2002 x5 4.4i and its smoking too but i was told its a multitude of problems valeves ect. You reckon its this?

[@TimmsBMWRepairsandInformation]

You don't have the N62 engine - you have an M62TUB44 - have a read of this: www.meeknet.co.uk/E32/PCV/Index.htm

[@briancooper2190]

Looking at buying a 645ci with around 60 thousand miles. Any other common problems with this model?

[@TimmsBMWRepairsandInformation]

Pre-2006 models had a lot of problems with the electronics (although not as bad as E65) - but as usual, watch out for smoking, although the PCV fixes a good proportion the valve guides are still a real problem.

[@loveforever3593]

Hi Tim on my 2004 bmw 645ci I have white smoke coming out only from the left exhaust pipe when I'm idling so u think it could be the PCV? Thanks

[@TimmsBMWRepairsandInformation]

As the PCV's are so cheap to replace go ahead and do them - if you still have smoke 100 miles later then it's something else.

[@timzadoynov6203]

Hey Tim, I have a question. I got a 2012 650i. The car produces a lot of white smoke from the exhaust when it’s cold. After warming up it usually does not smoke. I had mechanics come check out the car and I was told it’s the valve steam seals. What would you say the cause of that? Also where is the PCV orange cap located? And should I buy new once or just clean them up. Thank you!

[@TimmsBMWRepairsandInformation]

No orange bits on your engine! Completely different crankcase ventilation system. If it is cold where you are expect a lot of steam like this: kzbin.info/www/bejne/aJ_Yd5qCl5t8gcU

[@timzadoynov6203]

I ran the car today and after parking it I let it sit on idle. It smoked but not crazy hard. Than I stepped on the gas in parking gear, it shot a smoke cloud than went back to light smoke of idle. Also I noticed little bit of blue smoke when I stepped on the gas. What do you suggest?

[@TimmsBMWRepairsandInformation]

@@timzadoynov6203 The N63 engine can be a bit smoky, high oil consumption is quite expected - and BMW's 'fix' was to enlarge the oil-pan to hold more oil! However, because the turbo's in the 'V' of the engine produce a lot of heat they can affect the valve guides - but, if you don't need to top-up the oil between the 10,000 mile service intervals everything is normal.

[@timzadoynov6203]

Okay, because I warmed up the car today really well. When it was sitting in idle it was just having little white smoke. But every time I stepped on the gas pedal I saw good amount of blue smoke coming out. It smelled also, Than went back to little bit of white smoke. I was thinking it could be the turbos or the pcv. Or that’s normal for a n63 to shoot blue smoke when stepping on the gas in idle?

[@tonydavis1127]

Awesome

[@TimmsBMWRepairsandInformation]

Thanks!

[@davonteelse7163]

Hey Tim I have a 2006 n62 engine when it idles I have whitish bluish smoke out the exhaust should I change the pcv valve first or would it be the steam seals

[@TimmsBMWRepairsandInformation]

Yes, cheap and easy to do - then give it 100 miles or so to clear.

[@artbukanan8518]

Is it when ur at a complete stop, then accelerate u get the white smoke? Cuz that’s what’s mine dojng

[@TimmsBMWRepairsandInformation]

The best plan is to always change the PCV valves and then give it 100 miles or so before worrying any further!

[@artbukanan8518]

@@TimmsBMWRepairsandInformation thank you so much, will do !