Hi I have a 2.2 hdi with 106k miles it seems to have a knocking / tapping nose coming from the engine at idle speed and goes away after around 1200k revs there is no loss of power a friend sugested it is piston slap if so is this a serious issue ? hope someone can help
Thanks
Engine noise
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Peter.N.
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Re: Engine noise
Could be, although its not common nowadays, I would think its more likely a worn or blocked hydraulic tappet.
Peter
Peter