TOP 10 BMW N51/N52 Coolant leaks on BMW 328i E9x

Hey guys here is the video on how to spot leaks on your BMW N51/N52 engine and most common spots they originate
Thank you for watching

[@MB4675]

Great information. All the other videos never stated that this leak might be covered. Big time money saver

[@AB-jk7tw]

Very helpful to avoid the worst problem with the N52 - coolant system failures.

[@bosshogg2108]

Great video man ! I also wanna say thank you so much for answering my DM for help .. I got the bolt off and getting the job done ! Thank you again so much ! You are the man !

[@Zeiten]

Glad to hear it👍 thanks for watching

[@MarioDallaRiva]

Awesome info, thanks Tim! 1K+ repairs per annum…Impressive!

[@Zeiten]

Thank you for watching🙌👍

[@AB-jk7tw]

Great review. Appreciate the n52 content.

[@datkiddjophat4290]

I just spotted coolant dripping on my 328i to the bottom so your video help to search where Thank you 🙏🏾

[@Ellie-pc4rc]

Appreciate this video, found exactly the leak in 5 minutes bc of ur video thank you so much

[@Zeiten]

Happy to help🙌

[@belok177]

Man, can't thank you enough! I had a leak on my 328i SULEV and before watching this I had no idea that radiator could be covered under BMW warranty. It was! You saved me a lot of $$$. THANK YOU!

[@Zeiten]

I’m glad it was helpful👍 like subscribe share😉

[@dannyd9926]

what year was it?

[@belok177]

@@dannyd9926 year of what?

[@dannyd9926]

@@belok177 your 328?

[@belok177]

@@dannyd9926it was and is 2011

[@albertlee9220]

I want to thank you for this video. I just went through massive cooling issues on my N51. First the expansion hose cracked and while the mechanic was removing it, the nipple on the upper hose broke. Replaced both. After about five days of driving, the radiator cracked near the upper hose. Replaced the N51 radiator. Car is 15 and 1/2 years old with only 94k miles. Dealer would not do any goodwill on the sulev warranty which expired seven months ago Thanks for your great videos

[@Zeiten]

Happy to help, you can find a lot of diy videos on my channel to help you maintain your car and save money👍

[@albertlee9220]

@@Zeiten I am always a big fan of your channel. You are a man and a half for doing the work on the street.

[@tommcbride6610]

What a great video! I live in NC and I thought I had the N52 going on 5 years now, but it turns out the car came from NJ and is indeed N51 SULEV. These are a pain to work on, especially on your back, I can't imagine doing it on the side of the road!

[@BlufEvolve]

No way. I searched up my vin number and my n51 328i is from Jersey as well. Everything should be the same as an n52 minus everything that has to do with emissions correct? For example the body and what not

[@FPSAnarchy]

best & most useful channel on youtube!!

[@Zeiten]

Thank you🙌

[@robertmills4268]

You’ve been a great help for my 328i, I bought a manual coupe with 109k on the n51. Got it running perfect thanks to you. I could honestly sell it right now and make double what I paid.

[@Zeiten]

Awesome, thanks for watching👍

[@Emanual0607]

Thanks for that info!!!

[@acg2002us]

Excellent video helped me diagnose my leak on my N51 328i

[@Zeiten]

Thank you, happy to help🙌

[@funfun5656]

I think the reason the rad likes to crack on the driver's side is because that's the inlet reservoir...if you have a leak somewhere else it will depressurize the system and this is the side where the hottest of the steam builds up and cracks the hard line where the hose comes in. Could easily solve this weak point by spending an extra 100-200 bucks on an all metal rad rather than OEM (assuming you're not driving an N51 car).

[@johnselekta]

Thanks man, I've just got a coolant leak on my UK E60 (N52, 523i) and it's on the left side, so you've made my life a lot easier! Mission on 🧑‍🔧

[@Zeiten]

Happy to hear it👍

[@calebcrouch6652]

Hello! Great video. Where can I find the information regarding the cooling system recall? I don't see anything on the BMW website and I believe my radiator is leaking (thanks to your video!)

[@ThunderbirdRocket]

Awesome 👏🏼 ! Thanks !

[@Zeiten]

🙌

[@alexeisbejerano7010]

Great help for me too. Thank you.

[@Zeiten]

🙌

[@rhollyday]

LOL! My 2008 E90 has a rad leak at the exact spot on top that you pointed at. I am surprised the plastic rad lasted 185k miles. I will be replacing it and the tank myself with help of your rad replace vid. And I already replaced the mickey mouse fitting with metal on mine and two others. Thanks!

[@johnunderwood7786]

I have the same car and year as you and I broke my radiator trying to undo this hose fitting on the top. Cheap fix but it turned a very cheap job into a lil bit more expensive job.

[@rhollyday]

@@johnunderwood7786 In the vid he uses prybars to break the fittings loose without stressing the plastic parts. I finally did my rad last week and the prybars really helped.

[@anthonyortega3064]

Hi Tim, not sure if you still have your X5 but mine is very similar, I have a 2008 E70 & now I’m having electrical issues due to water problems in my driver side footwell. I have no sound or chimes. At first I thought it was the radio & replaced it but same issue. One day cleaning my mats I noticed the water but by then it was a lot. It was a drainage issue with the sunroof. I pulled the carpets & took out a lot of water. It’s sill drying out. Any input would be much appreciated

[@jengah43]

Thanks!

[@Zeiten]

🙌

[@maloosecat123]

CAN YOU PLEASE MAKE MORE VIDEOS ON THE E90'S? anYTHING DIAGNOSTIC WOULD BE SO HELPFUL.... i'M STRUGGLING WITH OCCUPANCY SENSOR AIRBAG LIGHT, AND CHECK ENGINE LIGHT (WATER PUMP), PLUS BRAKES ...THANKS FOR THE GREAT INFO

[@user-ub5oh9bf2k]

thanks a lot sir u are great TOP 10 BMW N51/N52 Coolant leaks on BMW 328i E9x kzbin.info/www/bejne/rqaYe5iIaNOApbM from the top 4:16 around oil filter housing 7:09 upper radiator hose 8:24 9:52 coolant tank 10:58 coolant hose 12:22 oil filter housing gasket from the bottom 13:47 radiator 14:37 water pump 15:13 water pump hose 15:44 misson oil cooler

[@stevet8607]

I'm going to call you z-man from now on another great video as always bro 👌🔥, you need to sell z-man t-shirts 👍

[@Zeiten]

😂😂 thank you, may be when we reach 10k subs this option will be available😂 thank you for watching👍

[@MarioDallaRiva]

Or as we’d say in Canada, The Zed-Meister! 💪🏼

[@Zeiten]

I’ll keep that in mind😁😁

[@stevet8607]

@@Zeiten , ok good 👍

[@stevet8607]

@@Zeiten just thought about this , z man BMW shirts , I have a e92 I would definitely buy some shirts , like I said just a thought

[@jamsbong]

Recently just changed my thermostat on my 328i. It cracked and started leaking and changed the radiator hoses as well. The radiator end tanks hasn't started leaking yet but as with all BMWs, it will eventually. 2013 model with 132K miles.

[@CarlosOrtiz-ds4cr]

Thanks really interesting.

[@Zeiten]

Thank you for watching, appreciate your feedback🙌

[@kingly71]

that hose on the bottom of the expansion tank, what's it called? Replacing my tank next week and want to try and replace those seals. Thanks man great videos!

[@ericsaesthetics9140]

Did you find out what that one hose is called?

[@shaunmcgravey8046]

Appreciate all your videos. Was wondering, since you do many at home repairs, about what the percentages of cars you couldn't fix at your clients homes, either taking too long or finding out it was more extensive of repair then originally thought? Just curious.

[@Zeiten]

1% max, everything can be done at home, garage or driveway or just on the side of the road

[@4touchdowns1game29]

Hey did you know the part number for the o ring at the bottom of the expansion tank.

[@pamelavillalpandoortiz2809]

Right side under or in front ,leaves a drip .which hose do i need to order?

[@dflex4180]

Bro I got to do the heater line house that you were talking about that run into transmission oil cooler to heater core..just go the part gonna start this weekend any tips or problems i might run into it. I dont think the reservoir or thermostat will be a problem accessing only concern is heater core line because I have never been in that part of car before.

[@Zeiten]

send me email with your question, we'll talk

[@Russia1117]

4:28 what's the o-ring for this hose? Need one for my bmw e63 n53. As I had to take it off to replace OFHG and now it leaks

[@gail6904]

Hello your videos are awesome..thank you for helping us out here with our BMWS.. ?? I DONT SEE ANY RECALL for the RADIATOR?? I am in FLorida bought a used 2008 328i sedan..will they cover (THE DEALER) and replace radiator for free? AS I SAID NO RECALLS SEEN...PLEASE ADVISE~~~~~thanks..also, where should the coolant level be on the stick? thanks!!

[@Zeiten]

Coolant level instructions are on expansion tank, there is no recall never been on radiator it’s only replaced for free if your car is SULEV has less than 150k miles and less than 15 years old and also only if radiator is leaking or has a fault code for eac sensor

[@renefuentes3143]

Hey I have a 2011 BMW 328ix drive and they were replacing a coolant hose and they broke my radiator and they want me to pay for one can they do that?

[@majedagha9309]

I hit jackpot , had all these 10 issues

[@Wergrun]

Is there a drain on the radiator on passenger side bottom? Just turned mine on and it’s leaking everything by the expansion tank on bottom of radiator

[@mbperfection]

this question might not be related, but its also part of the cooling system. Where is the heating heat exchanger sensor?

[@kempmichael339]

great video. I learned a lot! Question, could the number 1 place you mentioned (the Micky Mouse hose) don't not leak under pressure test, but leaks when driving around for sometime? I currently can't find any leak with pressure test. But had twice coolant completely leak out under the car, but I still could not find where is leaking. I watched your video and replaced valve cover gasket and oil filter housing gasket. Now it is still leaking.

[@divakim206]

Hi, did you ever figure it out? I've had just about everything replaced and still there is a leak somewhere. Please let me know.

[@kempmichael339]

@@divakim206 For me, it all started with one day, I noticed the car was running very hot. So I added a little bit coolant in the tank. The next day, there was some coolant drop on the ground. So I worried, and took the car to a shop. Then they said my radiator was leaking, and changed the radiator. Then after I drove the car, suddenly the coolant will all pour out to the street. I changed almost everything, but this problem still exist. In the end, I found out when the shop install the new radiator, they put the short plug in. But my car is auto-transmission, they should use the long plug!!! So I went to dealer, buy a $15 long plug, put it on, the coolant will never leak again.

[@divakim206]

@@kempmichael339 Oh my goodness, thank you for replying. Im glad you figured it out. I will ask my mechanic to look at the length of the plug to the radiator. Hopefully it solves the problem. Thanks again❤️

[@chetanjiva8874]

If you don't have the coolant/water ratio correct it may be expanding too much and flowing out the expansion tank. This video made me realize that this is possible since the water boils at 100 but the coolant raises the boiling point.

[@alionasviridova5315]

2016 BMW X1 coolant is leaking behind engine oil cooler. It's not leaking for a few days and suddenly flushes out everything. Any ideas?

[@benjaminmercy1071]

Hey wassup brother this vid was knowledgeable, but if I may ask did you ever find where the coolant was coming from in 13:52 of your vid ? It’s ironic because I have a coolant leak and it’s coming from the same place, left and right side of the bottom of the radiator.

[@Zeiten]

hi, of course, just as I said sides of the radiator leak like that, where plastic part connects to metal part of radiator that's why it made top 10 leaks

[@benjaminmercy1071]

Sheesh so that means I have to change the radiator thorn huh ?

[@Zeiten]

Yep, some people rebuild radiators and it works for awhile, technically plastic parts can be resealed but its not gonna be the same as new radiator

[@bogdanarsene9602]

Does the reservoir crack on non turbo models also? I'm at 160k on stock reservoir

[@federicotorresbordils7624]

Time aswell to check water pump and change coolant BimmerN53

[@albertlee9220]

Thanks

[@Zeiten]

🙌

[@ItsRacheal]

I have a 2017 430i and keep getting “coolant low” message on my car, BMW said I needed to replace the oil filter housing, water pump and serpentine belt so I did but it still says “coolant low” and just yesterday I had to pull over cause it said my engine was overheated. I’m a little frustrated and just want my car fixed

[@TheMISKREANT]

there's another hose below 8:43 that has a two way connection where one goes to the engine and the other goes down, which wasn't in the video unfortunately, Any help finding what that tube is called below the radiator that is vertical?

[@Zeiten]

You are probably talking about the heater hose that connects to upper radiator hose, here is the part number for it 64 21 9 178 427

[@bathanmark]

hello. ideally what is a good running/operating temp for these BMW coolant temp once it's already warm up? thank you

[@Zeiten]

About 95-98 celsius

[@jamesphilip4562]

My coolant hose on my 328i burst. I was able to buy another hose and changed it but everytime I pour coolant into the reservoir it just drains. It's as if there's another leak but I can't seem to find it. There's no leak that I can detect

[@alexeisbejerano7010]

Hi friend. I have an N51. I do not have any coolant leak. 2011 3 series , 80,000 mls. from NJ. should I take it in to the the dealer? would they replace the radiator even if no leak?

[@Zeiten]

No, sulev only covers failed components, if there is nothing wrong they won’t touch it

[@alexeisbejerano7010]

thank you. you are so helpful@@Zeiten

[@denzilnelson2006]

That was a great video. I have a 2011 SULEV 328i xDrive that I have been trying to find a coolant leak on. When I drive the car for 10 minutes I smell what smells like burning coolant through the vents. The radiator had a leak on either side like in your video so I replaced it because I did not know it was covered. (I'll try hitting up the dealer for reimbursement). The burning coolant smell is there. Any suggestions?

[@Zeiten]

Can be oil filter housing gasket, look for whitish marks of coolant, check under oil filter housing

[@denzilnelson2006]

@@Zeiten I changed the valve cover gasket and the oil filter housing gasket. The oil filter housing gasket was leaking but not since I replaced it. I pressure tested the cooling system to 21 psi while the system had coolant and the pressure never goes down. I don't know if I think I'm smelling coolant and it's something else. As long as I'm driving I don't smell anything in the cabin. It's only when I stop at a light it begins to smell. When I back into my driveway or turn left the smell gets stronger.

[@Zeiten]

Check your valve cover gasket again

[@denzilnelson2006]

@@Zeiten I did. When I replaced the old one, I realized it did not need to be replaced. The gasket was flexible and it was not leaking. After replacing it, I checked again and it's not leaking. I checked all the way around the block and the exhaust and it's bone dry. The smell isn't burning oil, it almost smells like coolant but not quite like coolant. It's driving me crazy and why does it smell when I reverse or turn left into my driveway?

[@denzilnelson2006]

I have oil leaking under the car which looks like the oil pan gasket or rear main seal but it's so hard to tell. I don't know if that is causing the smell or not. I also have a 2008 xi E90 which has an oil leak under the car but I don't get any burning smell in the cabin from that car.

[@uptownphotography]

E90 335XI Sedan 2008: I have a white smoke (coming from down low on passenger side of engine bay) and a coolant leak. I think the coolant is leaking on something hot as it does not smell like oil. I cannot find where the smoke is exactly coming from as it is way down low, nor have I found out where coolant may be leaking from. I could use some help or an idea where the leak may be. No leak visible from looking from the top of engine bay. Thanks. Phil

[@Zeiten]

Well usually it’s the valve cover gasket leaking oil on exhaust manifold but if you think it’s coolant lift the car and check from underneath there is a coolant pipe going into the block other end connects to water pump, if seal on the side of the block is failing then it might be smoking there since block get pretty hot

[@uptownphotography]

@@Zeiten Thanks for that info. The only reason I suspect it's a coolant leak is the expansion tank is now going down to empty about say on a 10 mile trip. Hard to estimate it exactly as I have stopped using the car the last few weeks because of this leak. The smoke starts really fast after say 4-5 minutes. Phil

[@Zeiten]

I’d say investigate those events separately, most likely smoke is from valve cover gasket oil leak and coolant leak is somewhere you just don’t see yet

[@uptownphotography]

@@Zeiten Regarding that coolant pipe you mentioned from the water pump. Is that one of the plastic type pipes or a rubber type hose? I'll also need to learn how to get that bottom shield off as I never removed one before. Thanks. You've been very helpful w/info.

[@tomconner5067]

They last longer than the warranty then they come apart $700 + tax and shipping, if you’re a tech with a lift a few hundred dollars in spare time, if you are a shade tree repair guy about a day and a half to two full days if you count labor and down time costs, and about $1,400-$5,000 if you have a dealer or local shop handle the repair

[@Michael-Ferdinand]

I hope one of these problem is the problem I’m dealing with I had the car evaluated at the dealer and they told me it has swollen coolant hoses and a leak but they didn’t tell me where and I was never able to find any leaks Ik I have a oil leak so I’m gonna check where the oil is falling and see if any of the hoses are bad I will update my comment if I find anything or not

[@amicrazy195]

🙏

[@JamesWelbes]

what is that part called? The most common cause? I've seen several videos talking about it but nobody says what it is or shares a part number

[@Zeiten]

It’s a coolant hose from thermostat to cylinder head, part # 11 53 7 545 890

[@adiletmurzaliev3386]

Hi E 93 2011 I have leaking on connection between coolant tank and lower hose #5 leaking on 11 minutes your video. Should I replace the coolant tank or o ring in the hose. What is the name of this whole assembly and part number?

[@matiasdmichael]

Same problem going on with me now i believe the part is called coolant recovery hose but i wanted to make sure how did it go with yours? Any tips ideas info would be appreciated

[@adiletmurzaliev3386]

@@matiasdmichael hi I have changed o ring in hose and coolant extention tank that fixed the problem.

[@matiasdmichael]

@@adiletmurzaliev3386 thanks I'll take a look at mine the coolant leaks come out on the bottom of the tank where the hose goes in so i am think is going to be the tank thanks man i appreciate your time and support

[@nicolasbechir398]

15 year warranty only applies to cars sold in California. If it was sold in Oregon it's only an 8 year warranty

[@Diesel92]

Mine has a leak at the transmission

[@j.s8607]

I have a leak on my 330i e90 n the hose has this number but can’t find it online to order it’s a pa66-gf30

[@Zeiten]

It’s not a parts number, where is it located?

[@brownieman2562]

Does the warranty cover if it’s over 150k miles but less then 15 years?

[@Zeiten]

Nope, both requirements must be met

[@pamelawalton3308]

My 3281 has a radiator drip underneath the car.

[@hectorespinoza7641]

13:45 I have a leak on this part could you help me identify what that part is

[@Zeiten]

Radiator

[@hectorespinoza7641]

@@Zeiten 😭 so I need a brand new radiator god dammit

[@hectorespinoza7641]

@@Zeitendo I need to do every coolant hose when replacing radiator

[@albertlee9220]

@@hectorespinoza7641I would since you don’t want to be stranded with a busted radiator hose

[@guppyspop]

My expansion tank crack and dumped all the coolant at 65k miles

[@americanmuscle3090]

Replace first one with metal

[@L-Noble.HiFi_Hi.Res-Soundminds]

💦 😱 I don't find the blue lick 😭

[@hectorespinoza7641]

Help me pls

[@likits1999]

E910.