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Re: What causes white smoke to come from the tail pipe...
A heavy presence of white smoke from the tail pipe is usually caused by a bad headgasket. If this gasket is bad, the vehicle may run rough as well as overheat.
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Possibly a blown head gasket, letting coolant into the cylinders to be burned. White smoke is usually coolant burning. Have the engine's compression tested to verify.
One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder head, a cracked engine block, or head gasket failure caused by overheating. A cracked head may allow coolant to leak into one or more cylinders or into the combustion chamber of the engine. Dirty coolant, a poorly maintained cooling system, a low coolant level, or a non-functioning cooling fan can cause engine overheating. In addition, engine wear can eventually cause the gaskets to lose their capacity to seal properly allowing internal coolant loss. Intake manifold gasket and head gasket failures are two of the most common sources of internal coolant loss caused by engine wear.
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black smoke is usually fuel...white is usually coolant...you may have a warped cylinder head or some other mechanical problem. do a compression test. If you disable the #2 injector does smoke continue? if it does, it's not fuel. When you remove #2 spark plug, is it wet? if so what's on it?
I would check the exhaust pipe a little closewr. White smoke can also mean a blown head gasket. Check the tail pipe to see if moisture is present. Also check coolant level. A blown head gasket can also cause related problems.
White smoke is caused by coolant or water
coming out the tail pipe. There is a
chance that the white smoke was caused by
water splashing up from a puddle onto the
exhaust pipe. Keep an eye on the
coolant level in the radiator in any event. If its less then there leak coolant leak in the car engine which is causing this problem....
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