All Things Mk5 > How to Guides / Troubleshooting

Misfire help!

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Gts556:
Hi All,

Have a 05 AXX gti on 110k. So far plugs, coils have been changed. Injectors were replaced with R tech flow tested injectors. MAF airflow sensor has been changed and so has the pcv valve.

Despite all this the car misfires on idle. Has previously throwing a cylinder 1 misfire code which hasn’t appeared post the injectors being changed. New injectors and pcv have made the car run better but still lumpy on idle and popping.


Had a compression test done and the mechanic mentioned this was all good and the carbon build up was not too bad so we didn’t attempt to clean this.

Not sure if anyone has any tips or suggestions as I’m out of ideas
Thanks!

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