S90_GWE Posted November 20, 2016 Share Posted November 20, 2016 My Z has a faint knock which can only be heard from inside with the doors shut. It sounds like it is coming from the centre of the car or possibly towards the rear. It is hear when on tick-over and cannot be heard anywhere in the engine bay at all. Does anyone know what this could be? Quote Link to comment Share on other sites More sharing options...
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