What' the most likely cause of thexhaust system smoking blue or white smoke?

1986 TOYOTA CAMRY
58,000 MILES
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ASTILLING
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It will smoke a small to moderate amt of white/blue smoke if I idle for 20 minutes or more
Aug 19, 2012 at 10:47 AM
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KHLOW2008
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That is an indication oil is being burnt in the cylinders or getting to the exhaust system. It could be worn piston rings but the higher percentage would be the valve seals.
Aug 19, 2012 at 11:29 AM
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MHPAUTOS
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What condition do you have on cold start up at idle? any smoke ?
Aug 19, 2012 at 12:44 PM
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