Q:

Why does white smoke come from my exhaust pipe?

A:

Quick Answer

Thin, white smoke coming from an exhaust pipe usually indicates normal condensation buildup in the exhaust, but thick, white smoke can indicate a problem like the engine burning coolant, a cracked engine block, a blown head gasket or damaged cylinder head. Thick, black smoke is generally a sign that the engine is burning excess fuel, and is typically not an indicator of as serious a problem as thick, white smoke.

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Full Answer

While a small leak with the coolant may not be a major cause for concern, if it is ignored long enough it can result in some significant repair bills and a good bit of damage to the engine. A leak in the coolant can also mix with other fluids in the vehicle, creating additional issues.

A cracked engine block, blown head gasket or damaged cylinder head are all serious issues, and can result in costly repairs.

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