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The Xterra was introduced in North America in the 2000 model year (1999 calendar year) and marketed using the tagline Everything you need, nothing you don't.

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Can a bad valve cover gasket cause smoke from the exhaust muffler

Got a question..can a bad valve cover gasket cause my 2004 Nissan exterra to smoke from the exhaust muffler..im replacing the valve cover gasket right now.. please answer my question please

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Roro Valdez, no it cannot. There may be some oil dripping onto the exhaust (header) and most of the smoke would be in the engine compartment. Smoke coming from the back of the exhaust pipe is caused by the combustion itself. It could be burning oil or coolant. You need to take a look at your spark plugs and see what those look like at the electrodes. If they are blackened, oily and sooted your engine is most likely burning oil. If they are kind of rusted looking it is most likely coolant. The repair of this will be depended on what you find out.

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Roro Valdez さん、ありがとうございました!
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