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A smokey engine can be fixed in any type of engine. The big question is: what is the smoke color?

Let me give you some examples to work from:

Black smoke signifies more fuel is being burned than air. Fixes: new air filter needed, restricted exhaust system, EGR failure, excessive fuel distribution, and improper grade of fueld

White smoke is caused by condensing liquid in the exhaust gas stream. Causes: low cylinder compression pressure, cylinder misfire (which would be indicated by a CEL), coolant leakage, and low combustion temp.

Blue smoke is caused by lube oil getting involved in the combustion process. With diesel engines, this is referred to as 'blowby' where the oil injected into a piston to cool it 'blows by' the piston o-ring in the cylinder, therefore getting involved in the combustion process.

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15y ago

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