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Nothing helps to solve a misfire

KarolisZiukas

New member
Hi,

My mk6 GTI is at 93k miles and I'm having a misfire at cylinder 1 and occasionally on some other cylinders. CEL appeared only 3 times in half a year. I've tried some of the ways to solve it, like doing carbon cleanup, changing spark plugs and changing ignition coils, but none of those fixes helped me. Misfires are happening for about half a year now, and it's only noticeable when idling, car vibrates a little. Also, sometimes, when it's warm outside and after driving car hard for some time, revs starts to jump automatically and car starts to run really poorly, it's looks like it's about to stall (See attached video). Not sure if this is related to misfires.

Anyway, any ideas how I could fix these misfires? Also, is it bad to drive around with symptoms like this?

Thanks for your help in advance!

 

BudgetPhoenix

Autocross Champion
what are your fuel trims like? I had a failing injector that caused misfire occasionally until it fully went. Fuel trims were pretty off. Also maybe do a cyl leakdown pressure test
 
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