White smoke exhaust but none on idle
Why is there white smoke coming out of exhaust when i rev but on idle theres no smoke on mazda rustler b3 1995 1.3 van
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Hi Kevin,
This isn't specific to your van, but in general white smoke usually indicates a coolant leak into the engine. While there can be several possible sources for that leak, the most common one is a blown head gasket.
Crank the engine over a few times with the coil wire removed so it doesn't start then check the spark plugs. You're looking for one that's wet but not with gas, with coolant.
Do a compression test and make sure all of the cylinders have the right compression.
Finally do a block check where you bubble gasses from the radiator through a chemical to check for the presence of hydrocarbons in the radiator, which indicates that there's a leak between the cylinder and the water jacket; i.e., a blown head gasket.
Go through those diagnostic steps then come back and tell us what you found.
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Ive done head gasket and valve stem seals in december as well as new valves and engineers.... Ive tightened head bolts to 90nm and there is no signs of oil and water mixing in radiator or oil cap
