Question about 1995 Jaguar XJ6

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Smoke from the exhaust when starting

When starting my xj6 after it has ben standing a while i get a cloud of smoke from the exhausts and then its fine. It is not burning oil. Could this be the valve stem seals or could it be down to the wrong oil being put in when i took it for a service.

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Sounds like it could be valve stem seals. That is the classic symptom if the smoke is blue.You can get the same symptom if the oil drain is plugged at the back of the head with sludge or those flat round oil bottle seals that are on the top of the bottle are notorious for falling in there during an oil change and working their way back . That is possible too.If the drain is plugged the valve cover will fill up.Stem seals are designed to remove small amounts of oil splash. They are not designed to handle submersion. The result smoke at start up.

Posted on Nov 30, 2008

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I would think this is valve stem seals that are letting a little bit of oil down on top of the piston and when you go to start the car you get a bit of oil smoke when you start the car

Posted on Nov 30, 2008

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