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Hillary Booth
Hillar ... 9/14/2012
1984 Jaguar XJ6 Base 6Cyl4.2L - Engine
My 84 Jag XJ6 runs rough. Could it be something as simple as a vacuum leak, or a fuel filter. I have changed plugs etc.
It seems to be more noticeable when I first start it up.
2 Answers
  • felplay auto repair.
    if rough at idle cold and then get better at hot intake gasket may be your problem the better way to know is with smoke test..
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    felplay auto repair.
    Hillary Booth 9/14/2012
    It does not smoke. I have also replaced the distributor cap, and the valve cover gasket, as well plugs and wires.
  • felplay auto repair.
    smoke test mean put smoke in the intake and watch for smoke leak at the intake and the air duct, look at you tube for this video; Finding Engine Vacuum Leaks With A Cigar it's may sound crazy but it's you find a vacuum leak you will be happy to fix your car.
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