1994 Toyota Pickup WHITE SMOKE

Tiny
HOBIE817
  • MEMBER
  • 1994 TOYOTA PICKUP
  • 6 CYL
  • 4WD
  • MANUAL
  • 199,000 MILES
Last year I had a complete overhaul done (september) ran great in june of this year had fuel leak from fuel damper on back of engine by firewall which mechanic had to take entire intake off to access it, fixed. Now the problem, 2 weeks after that temperatue rising on guage, coolant low, white smoke at start up, pulled the truck to mechanic sat about 2 weeks before he could get to it when he did every thing was fine no smoke no coolant loss no coolant in oil he ran it 2 weeks from his shop, let it idle for 3 hours every thing fine. Changed radiator cap as a possibility and oil. I drove it for a week ran great but last night coolant spewed out of radiator resovior, white smoke, had to add a jug of coolant to radiator, slight missing, a real mystery, would do none of this with mechanic, I am taking it back to him this week any thoughts or suggestions to do, that I can pass on to him. Thanks
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Sunday, August 22nd, 2010 AT 10:05 AM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Hi hobie817,

When there is white smoke with coolant losses, it could mean a bad head gasket.

Get apressure tst done to see if there is any leakages in the system.
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Sunday, August 22nd, 2010 AT 11:17 AM
Tiny
HOBIE817
  • MEMBER
Thanks for reply
could somthing had happen (broke, moved intake gasket) when 2nd mechanic took off intake and put back on beause it was running great for months before and there are no visible leaks from coolant system on driveway besides that spew from radiator reserve thanks
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Sunday, August 22nd, 2010 AT 12:16 PM
Tiny
KHLOW2008
  • EXPERT
At the intake manifold there are coolant passages so it is possible for the gasket to leak. The leak could be minor so you would not notice.

Another possoble cause would be the thermostat. It could be stuck and that would cause overheating and the spewing of coolant into the reservoir.

A failing thermostat might sometimes work correctly and suddenly fails to work.
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Sunday, August 22nd, 2010 AT 12:47 PM
Tiny
HOBIE817
  • MEMBER
Thanks for the info
could problem with intake gasket placement or something else under intake or bad thermostat cause the white smoke out of exhaust since there was no coolant in oil indicating head gasket. Any thoughts why it was fine for 3 weeks no symtoms then all of a sudden went bad. Would you pull intake to check and change thermostat. Would that be good to suggest to mechanic. Again thanks for your time
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Sunday, August 22nd, 2010 AT 4:06 PM
Tiny
KHLOW2008
  • EXPERT
If coolant is depleting, get a pressure test to check for leakages. It could save you a lot of time and unnecessary work.
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Monday, August 23rd, 2010 AT 10:42 AM

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