BMW Questions? Ask a BMW Repair Expert for Answers.
Hi, I’m Ron and I can help you.I have been in this business since 1975 and also teach automotive repair. I am confident we can resolve your problem together. Please understand that I don't know your skill level. I can't see, smell, hear, or touch the vehicle either, so it may take a few replies to get to satisfactory results. Please be patient!I also try to give all of the information you may need, expecting a “positive rating” in return. I will also continue assisting you after you have rated me, if necessary. If there is any reason I cannot get a positive rating, please let me know why “in advance”, so I can go another direction for you. I am sorry you’re having this problem; I’ll help you through it.
This misfire can also be caused by a bad fuel injector or low compression in that cylinder. Depending on when the misfire is occurring, it can also be a lean condition.
There's only one firing order. Cylinder #4 is our culprit.
Thanks, ***** *****
Let's first find out what the problem is, then we can address the repair. It a lot less writing:) The information for most of your questions is in the scan tool itself as far as code data. Freeze frame is one of them. Please don't forget to rate me and keep this link in case you have more questions later on too.
Great, now it's time to do some diagnostics for all of my suggestions as to why you have this misfire. The engine is still operating the same regardless of any new definitions:) The basics are still required:)
Thanks again, Ron
I don't know your skill level, but you need to check compression, fuel injector and power to it. If the code was set on a cold engine, it may be a vacuum leak causing the code. These are normal effective tests to isolate a misfire.
You need. No I'd light for injector power test and aa scope to test the circuit. All the tests I recommended are important.