1990 Toyota Pickup White Smoke from exhaust

Tiny
JACKAROO
  • MEMBER
  • 1990 TOYOTA PICKUP
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
We just aquired this toyota truck and figured out an electrical problem to get it started. Now that it starts it pulmes out a big white cloud of smoke from the exhaust, that smells like gas. We don't dare drive it, should we? The engine sounds good, what do you think it could be?
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Thursday, February 7th, 2008 AT 11:43 AM

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Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If its not condensation-its burning coolant maybe a blown headgasket crack head or block

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.
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Thursday, February 7th, 2008 AT 12:35 PM

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