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1988 Jaguar XJ6 engine

Tiny
BESWICK REID
  • MEMBER
  • 1988 JAGUAR XJ6
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 15,600 MILES
When the car is idleing it vibrates very rough along with a knocking sound coming from the engine, but
when you rev the engine the vibration and the
knocking goes away. PLEASE let me know what you
think.
Thursday, February 7th, 2008 AT 11:31 AM

1 Reply

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Without actually hearing the noise, I can only guess.
It could be a "slapping timing chain" or rod bearings. Either would be serious and would have someone knowlegable check it out.
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Wednesday, October 8th, 2008 AT 10:13 AM

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