blueish color smoke comes from my tailpipa when i take off whats the problem? my checkenginelight isnoton
Piston Rings: Worn or damaged piston rings will cause blow by resulting in blue/gray smoke. Worn Cylinder Walls: Worn cylinder walls cause blow by resulting in blue/gray smoke. PCV System: A stuck closed PCV system will cause excessive crankcase pressure resulting in blue/gray smoke exiting the tailpipe.
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