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    Mysterious knocking

    Hi All, I have a mysterious knocking, comes from underside rear and sounds like exhaust. It's only a light knock and happens on bumps and speed humps, also on throttle lift off and if depressing clutch slightly prematurely to throttle lift. My service guy has checked it out, nothing wrong...
  2. S

    Cracked exhaust manifold?

    I have a strange howl/whistle from my engine. It comes in around 2,500rpm and comes and goes, sounds like induction or exhaust. The dealer I recently bought the car from changed the belts and the aux tensioner, which is what we thought it was, but it's still there. Comes in when engine is hot...