Overheating

Tiny
MS48
  • MEMBER
  • TOYOTA
I have a 1995 toy sr5 tacoma I just replaced the head gaskets after my heads locked down due to overheating which locked down all my lifters and locked the cams to whioch took out 7 valves in one haed and 8 in the other I put new gaskets in it after put it back together and started it it got hot again, so I had the rad clean out new thermostat and it still gets hot I am not sure that I got the head gaskets on the right side or not, but I took the center head off and was able to pour water thre the heads which came out the thermostat hole , have I got the head gaskets on wrong, I have new water pump, timing belt, thermostat, I know its timed right because it turns over maybe twice before it starts, and runs fine please help I am totaly lost
Saturday, April 14th, 2007 AT 6:16 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Did you have the heads milled/shaved?
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Sunday, April 15th, 2007 AT 1:09 AM
Tiny
MS48
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Yes the heads have been completely redone, the only thing I have not done is flush out the heater core
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Sunday, April 15th, 2007 AT 7:13 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The heater core won't cause the overheating problem

but I took the center head off and was able to pour water thre the heads which came out the thermostat hole, have I got the head gaskets on wrong.

The center head-you're probably talking about the intake manifold.

It suppose to come out from there to go back to the radiator. Double check all the hoses going to the radiator and resevoir end to end make sure its not plugged-up.

Check the fan clutch by doing this: start the truck up till its warmed-up, then shut it down-turn the fan by hand some drag will be present-if it freewheels easily or locked-up replace the fan clutch.

Remove the thermostat run the engine without it-overheating still present? If so put Stat back and do the above mentioned.

In conclusion if it persist-have it pressure tested to include the Rad cap.

BTW did you find out what caused the overheating to do all these damage.
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Sunday, April 15th, 2007 AT 8:25 AM
Tiny
BESTBET777
  • MECHANIC
  • 89 POSTS
Check the catalytic converter, if it's plugged up thhat can cause back pressure whhich can blow the head gasket and cause overheating.
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Wednesday, April 18th, 2007 AT 4:50 PM

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