new to bimmerfest.
my car has an intermittent running fault that cant be found by my bmw dealer.
it has a popping/clicking sound coming from the engine, which sounds like it changes from left to right each time it happens (not sure). when i hear it with windows down it sounds quite loud.
also the car holds back on power for a split second when it happens.
it happens at all speeds and 2nd gear upwards. one time when i stopped the rev counter needle was dancing.
ive had new fuel filter, used fuel addative to clean system but no joy.
bmw took on test drive- no fault !
bmw diagnostic test - no fault !
its driving me crazy literally !
any suggestions would be appreciated.