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White Smoke or Water Vapor

White Smoke or Water Vapor in Your Exhaust

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Symptom: White smoke or water vapor from the exhaust. You notice white smoke coming from the exhaust when you start your car. If it is cold out, this may be normal. If the smoke does not disappear after the car is warmed, you have a problem.

Possible causes:

  1. Transmission fluid may be entering the intake manifold through vacuum modulator.
    The Fix: Replace vacuum modulator
  2. Cylinder head gasket(s) may be bad.
    The Fix: Replace cylinder head gasket(s).
  3. Cylinder head(s) may be warped or cracked.
    The Fix: Resurface or replace cylinder heads. (Resurfacing is not a DIY job)
  4. The engine block may be cracked.
    The Fix: Replace engine block.
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