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BMW 3-Series (E90 E92) Forum
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Misfire at Idle, None under power
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07-28-2022, 11:13 AM | #1 |
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Misfire at Idle, None under power
Hey so recently I've been trying to diagnose my misfire on my N54, I have swapped coils, spark plugs, injectors, changed injector seals, decouplers. My car is still misfiring at idle for some reason and I don't know what to change or what to swap anymore. If anyone has had a similar problem please let me know, and yes I've literally swapped a set of new index 12 injectors into the car and the same problem persisted. Its not the injectors.
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07-28-2022, 05:09 PM | #3 |
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07-28-2022, 05:20 PM | #4 | |
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07-29-2022, 01:57 PM | #5 |
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Seems to be a common problem with the N54's and no single reason that causes it, if it's not throwing any errors then I guess you just have to go down the list, coils, injectors, plugs, fuel pressure regulator, vanos solenoids, etc.
Here's a long thread on the topic: https://www.e90post.com/forums/showthread.php?t=509274 |
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07-29-2022, 02:54 PM | #6 | |
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A car that misses at idle and not during driving is often a fuelling issue. I would get a few logs of the rail pressure, fuel trims and lambda readings for both banks. |
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