Question about 1995 Toyota 4Runner
Truck over heats fast with the thermostate in with it out I can drive about 30 minuts. Had head gasket replaced, had head checked and surfaced. water pump pumps fine, no loss of coolant. It seems like the coolant system may be geting over pressurized? could this be a cracked block?
Please check whether there is a block in radiator fin
Posted on Jul 04, 2009
here is one good shot for you. hope it helps.
There are compounding reasons why the 3vze blows up:
1) The head gaskets are ****. The US mandate to remove asbestos fromgasket material made everyone's head gaskets in the late 80's-mid 90'sweak. Including the 3vze
2) The horrible crossover pipe superheats the #6 cylinder's valves& head area, causing the gasket to fail quickly & generallyhead warping
3) The block is iron, and the head is aluminum. While many people &mechanics blame head gasket problems on that directly, that has NOTHINGto do with it. The differance in metals only has a direct impact oncethe engine has already heated. At which case... You would have blownthe head gasket regardless because they're weak. (If it were iron/iron,alu/alu it would still have the same problems due to the head gasket.See other Toyota engine's of the era that have the same problem.)
Mill the heads flat (That's not expencive), clean the block &replace the head gaskets. Here in the US, I recommend Victor'sNitroseal headgaskets (Napa/Carquest) over the OEM Toyota gaskets.
more info in these links:
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
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