12-04-2021, 07:40 PM | #1 |
Private
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Help with a rough idle
Need some help from the forum members, my M2C with 40,000 kms developed a rough idle some time ago and I'm trying everything to solve it with no luck.
After I stop it takes like 30 seconds to start shaking, it's very slightly to catch on camera but really annoying, I can describe it as a hip cup that feels on the driver seat and repeats every 3-4 sec. If somebody has experience the same and know what causes will appreciate the help. What I have tried so far Check for leaks on the intake system Clean the maf and tmap Check all the charge pipes and J pipe for leaks Replace all the spark plugs and gapped to 0.022 |
12-05-2021, 12:11 PM | #3 |
owner@EurAutoShop
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Drives: BMW F80 M3
Join Date: Nov 2021
Location: Plano TX
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Without any data or codes your best luck is to do coils.
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12-07-2021, 09:42 PM | #5 |
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I diagnosed some misfires on random cilindres, change plugs and it improve significantly now the idle is smother, I will change coils because I keep having misfire at partial throttle. You know if you have misfire with ista even if they are at idle and doesn't throw any code . Just Learn that from other forum member.
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