AutoMD ... 11/3/2010
2006 BMW 525xi Base 6 Cyl 3.0L
misfire cyl 5. any idea's on what it may be?
i changed coil and injecter and plugs.what next?what else could it be?
The other possible causes of a misfire in your cylinder #5 aside from what you’ve mention are defective spark plug wires, defective oxygen sensor/s, burned exhaust valve, and defective catalytic converter poor compression. Check the condition of your spark plug wire in your cylinder #5 and if it’s in good condition perform a compression test if possible to know the condition of your engine.