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1989 Toyota Pickup Coolant back pressure in motor

Tiny
RICKVL
  • MEMBER
  • 1989 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 220,000 MILES
I have a problem with coolant being forced out of the engine and out through the radiator. It seems that the coolsant is not getting back into the top of the block, and is being forced into the overflow bottle instead. I thought I had a thermostat problem, but it's fine. I also flushed out the block and the radiator, finding no blockages. The truck doen't have to warm up to get this pressure, just has to be running. What am I overlooking in my diagnosis, and what could the problem be?

Thanx, Rick
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Saturday, January 24th, 2009 AT 1:56 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You have a leak somewhere could be the headgasket get it block and pressure tested
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Saturday, January 24th, 2009 AT 4:49 PM
Tiny
RICKVL
  • MEMBER
  • 7 POSTS
Thanks for the quick response, razmztaz. Is it a fluid leak, or an air leak? I had the head gasket done about 3 years ago.
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Sunday, January 25th, 2009 AT 7:55 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
To find out get it block and pressure tested
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Sunday, January 25th, 2009 AT 4:29 PM

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