BMW ROUGH IDLE MISFIRE FIX demonstrated on BMW E46

BMW ROUGH IDLE MISFIRE FIX demonstrated on BMW E46
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In this video we will show you what causes rough idle and misfire codes on BMW. We demonstrated what caused the rough idle on a 2005 BMW 330ci. Here is the whole BMW e46 Repair videos playlist: bit.ly/2tCnC4V
This video might be helpful on:
1999 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2000 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2001 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2002 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2003 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2004 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
2005 BMW E46 Rough Idle Misfire Code BMW 323i 325i 328i 330i 330ci 325ci
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[@carlspoerer2866]

I had changed the plugs and it did not fix the issue. I watched your video, there were no holes in the boot BUT the hose leading into the boot was allowing a big air leak. I seated the hose properly, the leak stopped and the car ran perfectly. Thank you so much for posting this as I was about to replace the VANOS. You saved me big money, time and the frustration of fixing the wrong issue!

[@auck1969]

You guys are fricken awesome! You have taught me sooo much about BMWs. Thank you so much!

[@JMUDoc]

If you have a misfire at idle that smooths out the more you rev it, that's an almost-certain vacuum leak - at idle, the engine is taking in very (legit) little air, so the extra air from a vacuum leak comprises a higher percentage; as the revs increase, the (legit) airflow increases and the vacuum leak contributes less and less to the _overall_ air intake. For example, an idling engine with a vacuum leak might be taking in 20% too much air, but only 2% too much at full throttle; the ECU can easily compensate for the latter, but not the former.

[@adrianzielinski854]

Then how to fix?

[@boostedbeautie]

so i have an 04 bmw 325i i have a random misfire but it only happens if i sit at a stop sign or a redlight too long, i have to turn my vehicle off mid drive and turn it back on mid drive (The guy i got it from put a pop and bang tune on it. could that be a tune issue? i've been digging at this for the past year and can't figure it out

[@aquetzalli86]

A mi me paso lo mismo de esa manguera aunque la que va pegada al motor es mas dificil ponerla

[@DaveG23]

I had this problem after watching this video I found my problem had same issue as this vid.. thanks alot guys

[@Banunnaki]

can you see times and dates from a startup to see when a misfire occured? or does this not show on bmw codes?

[@Zaakriya]

hello i have a problem on my bmw e46 320i cut 2l2 code p0174 and p0171 and p0313 can you tell me exactly what is it and sorry i speak not very good english

[@reflexgs6620]

I just bought 2004 330i with hot air mass air flow sensor code and transmission light on but idled smooth. Going from the codes I bought a new Delphi mass air flow sensor which got rid of the hot air mass air flow sensor code as well as the transmission warning light. But now the car idles horribly. The weird thing is that the car idles great with the mass air flow sensor unplugged. But as soon as I plug the new Delphi mass air flow sensor back in it starts to misfire on several cylinders. I bought two new Delphi mass air flow sensors and still the same. Did I get two bad mass air flow sensors? Or is there something else causing this issue? Looking forward to your help.

[@thevirtualstreetlife5826]

Just bought a e46 from a kid now I'm subscribed to you guys cuz it's helped so much

[@ProdigeeFilmworks]

for real? can we chat or can i reach out to you? im having idling issues with y e46

[@alddo78]

I’m struggling to find out what’s wrong with my PME 46. Hopefully will be the same issue what you got on your car tomorrow morning? I’m going find out

[@abdulkadernoorani6402]

Hello, I have an issue with the bmw 320i e90 N43 engine, I scanned with the elm327 it gave me the error code P122F powertrain..please if you can help. I got the engine check lights is on.

[@jonathanchera4822]

Hi guys do you have videos for the N43B20A engine misfire

[@patdiesel1641]

Check your injector O rings sometimes, there is a click click and the cylinder tries to push the injector out but the fuel rail won't give. Had terrible idle, shaking exhaust, dying engine on the signal lights. Pure humiliation. Smoke test and soapy water unveiled torn o rings. Car is finally relearning the fuel adaptations. Now it's ok

[@zadeanrobinson1608]

Your the best bro

[@jalalalomury6204]

Awesome you are really helpful

[@pauljones6211]

When you replaced the rubber boot you had 2 breather pipes were does the bottom 1 go to

[@mukamorazmuhammedov6875]

You guys best. Bro can you show a video about n62b44 n62b48 engines problems

[@loganpenland6568]

Hey guys the disa valve even though it doesn't control idle air in any way it is really bad for being a major vacuum leak. I spent days trying to fix my idle and stalling issue. I ended up borrowing a smoke tester and it poured out from around the disa valve. They have a factory like glued in orange oring peel that out with a pic until it's clean find a thin regular oring and your problem will be solved. The lower intake boots are also real prone to crack but that's an easy one to locate.

[@robertfaulkner7152]

I have a 2005 645ci, my car gradually started misfiring, mainly on cold starts...we smoke machined it, replaced with all new Eldor coils and Bosch plugs, even replaced vacuum booster o rings. ( Was leaking badly ) Next is the Vanos Solenoids!...It really amazes me that the OBDII can't tell you exactly what's causing the misfiring...I guess it's process of elimination when dealing with BMW'S Glad I didn't spend the $80k for this beautiful POS!

[@assadsmagicalmysterytour]

Poop

[@Zaakriya]

Hi means to what EML ON A BMW 320CI

[@jonirving422]

Have a 03 e46 325ci, random misfires multiple cylinders. All boots are new, maf, ccv system, smoke test no leaks, coils , plugs, icv valve and I'm really at a loss

[@loganpenland6568]

Also the ccv system gets brittle inspect it or bypass via a catch can setup or plum it back into the vacuum plenum on top of the intake with a pcv valve inline.

[@loganpenland6568]

The ccv if it's failing can cause it to pull oil up the dipstick tube into the vacuum plenum and it'll be burning lots of oil.

[@aquetzalli86]

Disculpe si podria decir donde puedo conseguir la computadora y como manejarla en alguno de sus vídeos gracias por todo esta muy interesante

[@jongreen243]

hopefully someone answers and knows what i’m talking about, but i checked all my cylinders and they were all running good except for cylinder 1, but i know for a fact that the coil pack and spark plug is good since i just bought brand new ones to try and fix the problem. I voltage tested the signal wire and it was good, so i am at a complete loss on why cylinder 1 isn’t firing. anyone help maybe?

[@enlightenedtrucker739]

Bloody legend

[@davidpantoja1449]

Thank you for this video. I was going crazy trying to figure out why my 2001 Z3 was idling rough at start up. I check the coils, changed the spark plugs and still nothing. I just saw this video and checked my hoses to find out they were torn. I ordered the hoses and will post if this took care of the issue. in any case I believe it will since I tried everything else. Thanks again.

[@eliteprojects9618]

Did the hoses fix it

[@davidpantoja1449]

@@eliteprojects9618 It sure did. She's purring like a kitten.

[@nickhernandez5970]

Just subscribed

[@sheepdogtactical1430]

Anyone have cold start very rough Idle and got Codes for Missfires cylinders 4,5,6?

[@tiopeperino9501]

Hey there, BMW new owner here, I have seen a couple of videos here, and most of the BMWs cold start idle rev is around 500-600, is that normal in BMWs? cuz I just got word from a mechanic I know that I needed to buy the VSS (vehicle speed sensor or the acceleration sensor or something like that), because he noticed how the car sounded a little too high for idling, and my idles are always between 500-600 also... is this normal or he is trying to pull up strings on me?

[@onlyhuman7420]

BMW engines are mostly set up to idle between 600-800 rpm.It's because of reducing the friction on the engine moving parts.

[@abdiasj3692]

@@onlyhuman7420 Alrighty, thanks for sharing the knowledge 😁

[@bmwe34sedan]

Thanks a lot! My bmw 325ci low idle. So I'll check that an inteke!

[@hadijakmora7060]

any updates?

[@motolove4599]

Is it a good idea to replace original air filter witha k&N?

[@pillshereee]

Yes, it's a great idea. No need to replace it after that, just wash it, grease it up and you're good to go. Also, it does add a bit of horsepower, and the sound of the car kinda changes. Basically no reason to not have one.

[@gs8282]

Thanks. I got BMW e46 318i. 2000. And I have same problem. Engine not running good. And no engine error. So now I know how to fix it. Thanks.

[@ahmadkheiro735]

Hi it's a bit late but did you managed to resolve the problem ? What was the issue

[@gs8282]

@ahmadkheiro735 hi. Yes I fix it . Problem was air filter box and all hoses around the air filter

[@David-yh5po]

Thanks for sharing this video with us. I have a 323i 2000 BMW. I honestly wish that I could just replace all plastic parts with Marrow or copper or something more reliable. The motor is good but everything around it is krapp.

[@ashleyren22]

David B I have a 2000 323i as well, do you have issues with it vibrating violently during cold start with rough idle, then going back to normal when it warms up?

[@flcn_bugsbunny2424]

@@ashleyren22 I have a 2006 323i and mine does nearly the same. Mine would continue shaking until it cuts out or until I turn it off and start it again. I've changed the vanos replaced catalytic convertor and even did a down pipe, but it is still doing it. This weekend I'm working on the choke hopefully that will fix it

[@JP212nyc]

My E39 520i (M54B22) has now 425 000 km and runs smoother than ever, mostly on LPG btw. One issue with these engines which is VERY often overlooked and therefore rarely mentioned: 🤓 On the M54 and M52, the hydraulic lifters OFTEN clog due to heat and cause all kinds of engine issues and fault codes, incl. misfires (!) but NONE of these codes actually mention to check the hydraulic lifters - they always "blame" another part. Hence you end up replacing alot of parts which might still be good without getting to the root cause. Try HYDRAULIC LIFTER CLEANING FLUID first, this stuff is meant to do just that, and it often really works! This is the simplest fix for your M54 and M52 engine, and you can't really hurt the engine with cleaner lifters, even if there is another fault as well. Think of it as Vitamins for your engine! And please: Try it first, comment and thank me later 😉

[@ritchierich2820]

Can somebody help me out please. I have a 2008 BMW 328i. It recently started shaking but it only shakes sometimes and only when it's at idel only. When I bring the rpm up it seems to smooth out but I've also noticed If i hold the rpm say 1500 it'll drop by itself to about 1000 and then come back up, I've also noticed that when I turn it on it makes like a whistle noise that will sometimes continue to whistle or will only last a few seconds, but it always whistles when I turn it on then fades out. No check engine light. I've tried looking for a broken vaccum line with gas but no luck. Also the engine doesn't always shake it's like 80% of the time but it does whistle when I turn it on.If you have any thoughts I would appreciate it thank you.

[@isitgoodtodo2834]

bad engine mounts?

[@antoniorivera5481]

If you hear a whistle noise your car is sucking in more air than needed. Check your crankcase ventilation valve it's built into your calve cover. The rubber seal inside can be torn. .

[@ritchierich2820]

@@antoniorivera5481 It was the rubber piece inside that was torn fixed it myself about a month ago thanks for the reply though !

[@robertverduzco2764]

Clean out or change your vanos solenoids, same thing happened to mine and fixed when I cleaned out my vanos solenoids

[@JoeryPigmans]

the whistling noise could also be the secondary airpump. These run during the warm up cycle and then stop. This could cause the sound to fade out eventually

[@DrAlmurshidy]

Thanks for the video. I have a 2006 325i with rough idling and misfiring cylinder 3, I changed all the plugs and put a new coil in cylinder 3, no change. Pressure in that cylinder is less than the other 5, reading close to 105 while the rest are averaging 150. What should I do next?

[@JoeryPigmans]

this may sound stupid but it is a simple test to verify the piston rings. Add a bit of oil to the cylinder with less compression then the others and run the test again. if the compression improves with the oil inside the cylinder it means there is something wrong with the piston rings themselves or the piston. if there is no improvement take the head of or use a camera to look inside the cylinder and check the valves themselves.

[@rayphillips6422]

Can't hear it run cause u kept talking

[@ejsadlt]

Hey, my e46 misfires a lot with the check engine light, could this be the problem?

[@gogeta999994]

Check engine will always be there, you can problem diagnose the problem by finding out what’s not running right

[@JMUDoc]

You need to check the "short term fuel trims" - a vacuum leak will have positive values of at least 20% because the computer is trying to add more fuel to compensate for the extra air.

[@betonbreton]

Hi! I got a E92 bmw 2007 , 2.5i 92.000 miles on the clock..The problemI got is the engine just cut of at lower speed. I changed the VANOS solenoids the oil filter and the oil, but nothing happend, engine cuts of at lawer speeds.Can you give me some advices please! , I see you know all about this tipe of engines.Thanks allot!!!

[@morantb]

IS there a video that shows installation and the car working afterwards?

[@jameslatimer1432]

Yeah it's parked down the scapyard apparently running nice ,!@

[@3ManFunny]

Yesterday my car had missfire,bad idle i opened the hood and i saw a crack in the boot i used duct tape and the car works smooth

[@hadijakmora7060]

what boot?

[@3ManFunny]

@@hadijakmora7060 part number 1 435 627

[@3ManFunny]

And the one before this

[@fogmusicinternational7337]

Cold weather coz this shaking after running for a while, it's k

[@melissastighling8882]

E46 eml light on then it miss

[@johnhinz1173]

BMW e46 oil consumption

[@rrmech11]

👍👍

[@BMWBADBOYM3]

Misleading video but a simple way to check for vacuum leaks is spray some carb cleaner around all the intakes hoses and underneath where the crankcase valve and hoses are. No need to disassemble everything.

[@robertfaulkner7152]

Better yet smoke machine, you can't expect to hit all of the possible leaks with spraying unless you're really lucky

[@cornholio4510]

Can i use deodorant spray instead to find leak? i saw some mechanics use deo to spray in engine throtle body should do no harm to engine?

[@davidnguyen5028]

I’m going check mine and report back.. thx.

[@KillThatJewS1MC]

David Nguyen did yours have the same problem?

[@davidnguyen5028]

lee Zek my intake is ok, I put a bottle of Lucas injector cleaner in the gasoline, it appears the problem seems to go away.

[@KillThatJewS1MC]

David Nguyen I’ve checked my coils and you wouldn’t what was making the car missfire? The latch that closes the coil wasn’t shut properly on the 6th coil. I’ve made sure the coil was working properly and closed it. That got rid of the problem 😜 Make sure you check that your coils are working (and shut properly lol) that should fix the problem

[@daviswhyte1375]

That’s the most obvious and that’s not cracked it’s completely destroyed!

[@adaohd2538]

Kkkk holy fuck, that hose 😂

[@Dat550go]

Bs.. How about you start the car with the old part, let us see and hear the misfire rough idle and then change the elbow and start it up and let us see if its still misfire rough idle

[@RoleyChiu]

the very faint background music is really annoying. trying to listen for the misfire and listen to your voice and the very slight music makes it hard to focus on what you're saying.

[@davidgarcia6386]

I replaced my coils and I still don't have no spark on the 3 and 4 coil spark plugs

[@BMWBADBOYM3]

How do you know you have no spark on those coils. I'm curious. Maybe I can help

[@thepincushionman7063]

Sumpin ain't right boy

[@uncletomwhitelash5415]

Sounds like a vacuum leak

[@AXU243]

Did you even watch the whole video? The whole vacuum boot was torn apart so ofcourse it's vacuum leak😂😂

[@uncletomwhitelash5415]

@@AXU243 yeah I have been a German auto tech for about 20 years, I didn't need to watch the whole video

[@davidnguyen5028]

Uncle Tom Whitelash how often are the fuel injectors go haw, is this a common problem on e46. I checked my intake and there is no leaks or cracks. I did change the coil and spark plug. I put a bottle of Lucas injector cleaner and the rough idle appears to go away.

[@ronaldswapp3186]

The hook and stickers must make it go faster, I hate it when people do this crap to a perfectly good looking Bimmer. I'm surprised you don't have the Buick Ovals on the fenders and curb feelers on the sucker. Dang, the underhood is down right filthy.

[@assadsmagicalmysterytour]

What

[@shunjohn3567]

I just want to know is this his dammm real voice

[@xdtoysx]

he can talk while gargling water

[@Bruce_T]

Legend says he talks using only the back of his throat. Utilizing only his uvula to articulate words.

[@LingLingLongStyl]

Once you get a misfire, just throw it away and buy a Honda. Even after you fix it it’ll just come back worse

[@porsche928s4]

😂😂😂😂 not all of us wanna drive a washing machine

[@thepincushionman7063]

Why the fck u rice up a bmw with a cheapass china hook?