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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 03-10-2011, 10:34 PM
rholland81 rholland81 is offline
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Location: Chicago
 
Join Date: Aug 2009
Posts: 21
Mein Auto: 95 BMW M3
e36 m3 intermittent dead misfire, need advice!

hi, my 99 m3 has this weird issue lately where it just will randomly have a really bad misfire when i start it up and it usually goes away after i drive it a little ways. its definitely on only 1 cylinder (code indicates only cylinder 4) and it doesnt happen very often. most days the car runs smooth as can be. but every now and then i will start it up and it will have that dead misfire on cylinder 4 and it feels really bad. already switched out the coil and the plugs look fine. and considering how intermittent it is, im starting to wonder about maybe a sticking valve? is that possible? or a problem with the injector? (maybe the o-ring or the pintle cap?) if anyone has any advice it would be greatly appreciated. otherwise im going to just start trying different things. thanks in advance for any advice!
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  #2  
Old 03-10-2011, 10:39 PM
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CDirks CDirks is offline
Is a real boy
Location: Randolph Center, VT
 
Join Date: Jun 2010
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Mein Auto: White 1997 328i
Seafoam never hurt anybody. You might give that a try.


Funny how you've been a member since late 2009, but haven't posted until today. I would say welcome to the fest, but you've been here longer than me
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  #3  
Old 03-11-2011, 05:06 AM
rholland81 rholland81 is offline
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Location: Chicago
 
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Mein Auto: 95 BMW M3
hah, yea well i hadnt posted anything yet because i didnt have my car yet. my 1st car was a bimmer way back in 1999, and then i had a couple e30's a couple years ago, and now i just bought my e36 m3 last month. i love the car. estoril blue on dove. ill try to get some pics up soon.
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Old 03-11-2011, 07:03 AM
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crisscross crisscross is offline
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Location: Best country on Earth
 
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Mein Auto: 1995 M3 Boston Green
Yay more m3's
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1995 BG M3(sold) 2000 TiAg 4.4l X5(sold)

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Old 03-11-2011, 05:37 PM
rholland81 rholland81 is offline
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Location: Chicago
 
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ok so i just got another clue i think. along with my P0304 for the cylinder 4 misfire, i also have a P1250 which is a fuel pressure control fault. so now my thoughts are going to a possible leaky injector or maybe a cracked injector pintle cap or o-ring that is letting out fuel pressure and throwing that code. i hope to check out the injectors this weekend if i have time. ill post findings when i get them. thanks
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Old 03-15-2011, 01:12 AM
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bluebee bluebee is offline
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Location: San Jose, California
 
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Mein Auto: 02 BMW 525i M54 auto 130K
Even though this is from the VERY best of E39 Links, it should still be applicable for the most part to the E36.

- How to identify all BMW computer-specific OBDII fault codes (1) & how to better understand the key EPA federal test procedure (FTP) concept of the BMW "drive cycle" (1) & how to diagnose a typical BMW E39 engine misfire (1) or a sporadic-temperature-change cold-engine intermittent misfire (1) obtaining the pending or diagnostic trouble code (DTC) using free or freeware scans (1) [except in California or Hawaii (1) (2)] or the cheapest ODII scanner in the world (1) (2) or a better overall scanner (1) or the best diagnostic tools (1) (2) (3)

Note that Seafoam is the LAST thing you do (when all else fails!).
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Old 03-15-2011, 01:55 AM
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LaCrosse540i6 LaCrosse540i6 is offline
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Location: WI
 
Join Date: Apr 2009
Posts: 1,086
Mein Auto: '03 540i M-sport
I would try switching the number 4 injector with another. Clear the code, then see if it comes up on that cylinder.

It wouldn't be a bad idea to order injector o-rings and replace them while you're at it.

Good luck.
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  #8  
Old 03-15-2011, 08:57 AM
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ZeGerman ZeGerman is online now
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Location: Seattle, WA
 
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Mein Auto: 1998 BMW 328is
So you switched your coils and plugs and the problem stayed on the same cylinder? I'd look at the injectors if that were the case.
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Last edited by ZeGerman; 03-15-2011 at 08:59 AM.
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