Quote:
Originally Posted by syntax
I got code 29D1: Combustion Misfires - Cylinder 5 after doing a stage 1 MHD pull in 2nd gear to high rpm. Had MHD for 2 weeks, usually drive on stage 0 and sometimes stage 1. Car has 104k miles. I have an intake and charge pipe with new diverter valves. Anyways, after the pull the car was running very rough. I only took the engine cover off the day before but it felt like the engine ticking from direct fuel injection was louder than normal but maybe im tripping. On the way home, the check engine light dissapeared and the car wasn't rough anymore though i think the sound may still be there. Could this be from a failing injector? Some people thought i may have had a leaky injector in my recent mhd logs post. Im wondering if it had carbon buildup on the injector and it fixed itself. I drove it to work today after clearing the codes and had no problems but this sound remains and the misfire code did not come back. Didnt go above 2000 rpm though. Here is a video of it:
https://streamable.com/80y1lq |
When it misfires its gonna sound rough.
Before you jump to injectors and throw money at the problem, swap the spark plug from cylinder 5 to another cylinder and then do another WOT pull. If the misfire follows then you know its your plugs causing it, otherwise swap coils and do the same.
