I have a BMW 3 Series with an engine misfire. I have already changed the spark plugs and ignition coils, but the problem persists. What should I try next?
ReplyOne possible cause for an engine misfire in a BMW is a faulty fuel injector. You can try using a fuel injector cleaner or replacing the fuel injectors to see if that solves the issue.
Another potential cause could be a vacuum leak. Check all the vacuum hoses and connections to make sure they are not cracked or damaged. You may also want to use a smoke tester to check for leaks.
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