E90 cylinder #3 misfire

Seann14217 · 11-08-2019, 02:34 AM

Sooo I got a check engine light, scan and ran codes pulled a cylinder three misfire, replaced all 6 spark plugs and ignition coils Bc I figured they need to be done anyways (cars at 127k miles) and I'm still getting misfires... it's really weird it's only on cold starts. The engine will sound different and run rough for a few seconds then it goes back to normal and stops misfiring. After the engine warms up it misfires only at idle from what I can tell. Help PLEASE

MightyMouseTech · 11-08-2019, 05:15 AM

Sounds like a leaking injector. Pull the plugs and see if number 3 is wet with fuel.

relative4 · 11-08-2019, 07:25 AM

And please stop posting multiple threads for the same problem.

Seann14217 · 11-08-2019, 01:21 PM

Quote:

Originally Posted by relative4

And please stop posting multiple threads for the same problem.

Maybe if more people helped I wouldn't have to😂

11-08-2019, 02:34 AM	#1
Seann14217 Private 3 Rep 67 Posts Drives: Bmw e90 Join Date: May 2019 Location: Usa iTrader: (0)	E90 cylinder #3 misfire Sooo I got a check engine light, scan and ran codes pulled a cylinder three misfire, replaced all 6 spark plugs and ignition coils Bc I figured they need to be done anyways (cars at 127k miles) and I'm still getting misfires... it's really weird it's only on cold starts. The engine will sound different and run rough for a few seconds then it goes back to normal and stops misfiring. After the engine warms up it misfires only at idle from what I can tell. Help PLEASE
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11-08-2019, 05:15 AM	#2
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	Sounds like a leaking injector. Pull the plugs and see if number 3 is wet with fuel.
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11-08-2019, 07:25 AM	#3
relative4 Major 612 Rep 1,272 Posts Drives: '08 335xi E90 MT stage 1+ Join Date: Feb 2019 Location: Denver, CO iTrader: (0)	And please stop posting multiple threads for the same problem.
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