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BMW Case Study 17: BMW 640i Timing Gear Replacement

Mr. Alan’s BMW 640i is having a misfiring visited our workshop.

BMW Case Study 17: BMW 640i Timing Gear Replacement

After checking, our experience BMW specialist confirmed the timing gear screw is having issue and work begin swiftly.

BMW Case Study 17: BMW 640i Timing Gear Replacement

As expected the aluminum screw from the timing gear have broken and hence explain the misfiring due to irregular engine timing.

The new version however have recognized the problem and have been changed to metal screw which will not break so easily.

BMW Case Study 17: BMW 640i Timing Gear Replacement

BMW Special tools is needed to reset back the engine timing variation.

BMW Case Study 17: BMW 640i Timing Gear Replacement

As usual of our company protocol, we will wash clean the valve cover after removing it.

Car returned to Alan with a Complimentary car wash and vacuum done.