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Matt
Matt, Mechanical Engineer
Category: BMW
Satisfied Customers: 109
Experience:  BEng hons Mech engineering, in auto industry 22 years
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bmw 520d engine knock at idle

Customer Question

bmw 520d engine knock at idle
Submitted: 2 years ago.
Category: BMW
Expert:  Steve replied 2 years ago.
what is your question about this?
Customer: replied 2 years ago.

THE ENGINE HAS BEEN COMPLETELY STRIPPED TWICE AND NO


FAUI;LTS HAVE BEEN LOCATED. BRAND NEW BOSCH COMMON


RAIL INJECTORS HAVE BEEN FITTED AND THE VEHICLE STILL HAS


THE SAME PROBLEM. THE ENGINE KNOCK IS WHEN THE VEHICLE


IS AT IDLE AND GETS LESS AS THE ENGINE IS REVVED PAST


1200 RPM. DIAGNOSTICALLY NO FAULTS FOUND, ENGINE IS NOW


BEING ASSEMBLED FOR THE THIRD TIME. HAVE YOU GOT ANY IDEAS OR EXPERIENCE OF WHAT COULD BE THE POSSIBLE CAUSE OF THIS ISSUE.