My BMW XM's engine is constantly misfiring, causing a rough idle and loss of power. I've changed the spark plugs and ignition coils, but the issue persists. What other potential causes should I look out for and how can I fix this issue? Any helpful tips or advice?
ReplyFirstly, make sure to check the fuel injectors as they can also cause an engine to misfire. If they are dirty or clogged, they may need to be cleaned or replaced. Other potential causes could be a faulty airflow sensor or a problem with the fuel pump. I would recommend getting a diagnostic test done to pinpoint the exact cause of the misfire. In the meantime, try using a fuel injector cleaner and see if that helps.
Another common issue with BMW XM engines is carbon buildup on the intake valves. This can cause a misfire and can be resolved by getting a professional decarbonization service. Also, check the PCV valve and hoses for any leaks or blockages, as this can also affect the engine's performance.
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