[marwin888]

Hey guys,

I've been having these on and off CEL's for misfires in my car.


140010 /Intermittent: Combustion misfires. Several cylinders detected

140510 /Intermittent: Combustion Misfire, cylinder 5: detected

140410 /Intermittent: Combustion Misfire, cylinder 4: detected

140002 /Intermittent: Misfire, several cylinders damaging exhaust gas after starting up

140502 /Intermittent: Misfire, cylinder 5 damaging exhaust gas after starting up

140402 /Intermittent: Misfire, cylinder 4 damaging exhaust gas after starting up


I feel like they started shortly after I replaced all spark plugs and ignition coils at the 95k mark. The car I have is 2013 BMW 335i with 104k miles. Major upgrades I have is the Dinan Stage 2. I was going to begin swapping the coils and plugs on cylinder 4 and 5 to other cylinders but before I did that I wanted to see if anyone has any idea what could lead to these misfires.

Thanks in advance!

[marwin888]

I forgot to mention that the car runs fine but the CEL light just does not go away. I've erased the codes to see if they were maybe old but they keep coming back

[thejeremyman9]

Swapping coils to see if the problem follows the coil is the correct next step.