Ali10
BMW 5: Problems with engine performance and idling
(Translated from German)
Summary of the thread
The BMW 5 is experiencing engine performance issues, including a check engine light, rough running, reduced power, and shuddering when idling. The diagnostic indicates combustion misfires in cylinders 4 and 6, with the injection switched off. Despite replacing spark plugs and ignition coils, the problem remains. A suggested solution is to check and possibly clean or replace the fuel injectors for those cylinders, as they might be clogged or faulty.
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3 comment(s)
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No start/crank 2012 BMW 550i had vehicle diagnostics done, shop says cheap battery, power distributor needs replacement, and battery registration. 2nd cause could be starter needs replacement. I thought diagnostics you would know exactly what the problem? Charged $619 for two diagnostics
CarlyMechanic
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No start/crank 2012 BMW 550i had vehicle diagnostics done, shop says cheap battery, power distributor needs replacement, and battery registration. 2nd cause could be starter needs replacement. I thought diagnostics you would know exactly what the problem? Charged $619 for two diagnostics
Start by replacing the battery with a high-quality one and ensure it is properly registered to the vehicle. This can often resolve electrical issues. If the problem persists, consider checking the power distributor and starter as suggested. Let me know if this helps or if you have any further questions!
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BMW
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5
CarlyMechanic
Check the fuel injectors for cylinders 4 and 6. They might be clogged or faulty, causing the misfires. You can try cleaning them or swapping them with injectors from other cylinders to see if the problem moves. Let me know how it goes or if you have any further questions!