If it is blue smoke, it is oil burning. If it only smokes after sitting, then it is a leaking valve guide(s). If it smokes randomly while running, you have leaking oil control piston ring(s). If the smoke is very heavy and white, that is coolant and your head gasket is the problem.
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If it is blue smoke, it is oil burning. If it only smokes after sitting, then it is a leaking valve guide(s). If it smokes randomly while running, you have leaking oil control piston ring(s). If the smoke is very heavy and white, that is coolant and your head gasket is the problem.