I have 1996 nissan sentra automatic when you cold start car idle with no smoke as soon as the car heat up then there white smoke coming from exhaust we have change the cylider head and new gaskets we even change the oil rings with mains and big ends don't know what to do the car still smokes

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Jaye t rock

Cars & Trucks Expert 264 Answers
Posted on Feb 08, 2018

Jaye t rock

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It smokes because there is a bad air fuel mix ratio...

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Anonymous

1861 Answers
Posted on Sep 27, 2008

SOURCE: 1993 TOYOTA TERCEL 1500cc Valve Seals Replaced now smokes much worse

You either have had the wrong valve seals installed, they are physically missing, or the valves are incorrect (too loose in the guides/stem too thin). The rocker arm seals will not contribute to your issue. If it did not have the oil smoke before you took the head off, the issue is with whatever the machine shop did. Valve seals have to fit TIGHT, or oil will go down the valve stem into the intake.
Take the head back to the machine shop & tell them to fix it. For free.

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I have 1996 nissan sentra automatic when you cold start car idle with no smoke as soon as the car heat up then there white smoke coming from exhaust we have change the cylider head and new gaskets we even change the oil rings with mains and big ends don't know what to do the car still smokes

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Jaye t rock

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I have 1996 nissan sentra automatic when you cold start car idle with no smoke as soon as the car heat up then there white smoke coming from exhaust we have change the cylider head and new gaskets we even change the oil rings with mains and big ends don't know what to do the car still smokes

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