[skatz1922]

Hey guys,

I recently replaced all 6 plugs and 6 coils due to a cylinder misfire p0303. I figured I would replace all since it had been a few years. So I did that and know the same code (p0303) is back. I will explain the symptoms a bit; the care starts very rough and almost stalls on a cold start. Since I've already replaced the ignition coils and spark plugs what can be the other possibilities? I am hoping its an HPFP or Fuel Injectors that way I can take it in for the recall warranty. What do you guys think the issue is?

Thanks a lot

[2007 bmw 335i (e92)]

[skatz1922]

Thanks for all the responses you guys really helped. For those with similar issues I had the car diagnosed at the bmw dealership and turns out I need my fuel injectors replaced along with a exhaust manifold cleaning. Looking for a good indy shop to do service.