How to diagnose a cylinder misfire in a bmw engine Problems with spark plugs, ignition coils, or spark plug wires can each lead to misfires to diagnose a cylinder misfire in a bmw engine, start by checking the basics such as spark plugs, ignition coils, and fuel injectors, as.
BMW 335i N54 Eldor Ignition Coils Install: BEST OEM Option - YouTube
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I had this happen, minus the changing of multiple coils
I _did_ change all 6 of my coils with new bosch oe coils, but the issue would still come back at random intervals Twitter facebook digg google stumbleupon del.icio.us my yahoo! Gapped the plugs to.022 and everything, car ran amazing for 2 days, then all of a sudden im racing this e92 335i on the highway and i get a combustion misfire cyl. Swap from known good cylinders and see if the misfires follow
This is a common issue on bmw 1, 3, and 5 series models and can be caused by a range of factors — from vacuum leaks and faulty oxygen sensors to exhaust leaks.
