So, the other day I was leaving and my N54 335i cranked as usual. Then it started having a rough idle, bouncing between 800-400rpms, then eventually it stalled out and died. A few days later I went out to start it again and it did the same thing. Except for this time I gave it gas to keep it running. I through a 29cd code, misfirings on cylinder 1. This time I kept clearing the codes and giving the car gas to get it to stabilize. After about 1-2 minutes of doing this, it finally stopped throwing the codes and stabilized. After that happened I began to log to search for anything. Throughout the log, I would blip the throttle to about 3k and let it resume idle. Mostly to see if it would misfire under low stress. It is important to note that it has been below freezing and rain has frozen on the car, and snowed the days this happened.
During the warmer days, it never did this. Actually, this is the first time it has misfired since I first go it. Aside from an overboosting code it threw when it was still warming up and I was doing highway speeds. My first thought was it could be a leaking injector, and many seem to agree with this. I also uploaded the log here to see if someone a little more proficient could look over them and tell me what they think. I noticed that my LPFP (fp-l) seems to be in the normal pressure range. However, my HPFP (fp-h) looked alright at first glance. But noticed it dropped below 5 (4) after sometime idling. I did not think this could cause a misfire, just trying to cover my bases.
Car has JB4, DCI, Chargepipe w/HKS Bov, new spark plugs, new coil packs, new battery. I know some of this is completely irrelevant to the misfire, just covering my bases in case I missed something here.
Any insight would be greatly appreciated. Again it has been below freezing and will be going out sometime in the next day or so to start it up to warm it. This time I will be logging the crank to see if the issue repeats.
During the warmer days, it never did this. Actually, this is the first time it has misfired since I first go it. Aside from an overboosting code it threw when it was still warming up and I was doing highway speeds. My first thought was it could be a leaking injector, and many seem to agree with this. I also uploaded the log here to see if someone a little more proficient could look over them and tell me what they think. I noticed that my LPFP (fp-l) seems to be in the normal pressure range. However, my HPFP (fp-h) looked alright at first glance. But noticed it dropped below 5 (4) after sometime idling. I did not think this could cause a misfire, just trying to cover my bases.
Car has JB4, DCI, Chargepipe w/HKS Bov, new spark plugs, new coil packs, new battery. I know some of this is completely irrelevant to the misfire, just covering my bases in case I missed something here.
Any insight would be greatly appreciated. Again it has been below freezing and will be going out sometime in the next day or so to start it up to warm it. This time I will be logging the crank to see if the issue repeats.