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Cooling system

Tiny
WHITETAIL734
  • MEMBER
  • 2000 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 185,000 MILES
What will cause excessive pressure in the cooling system? Has new antifreeze, thermostat. Its not overheating. No water/antifreeze in oil. Not leaking or burning it either. Pushes antifreeze into resivior. Cap is new and does not get hot either. Alot of pressure when removing cap.
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Saturday, December 25th, 2010 AT 1:07 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
It sounds like a bad head gasket. If air from the cylenders gets into the cooling system, it will blow the coolant out the radiator, overflow. Try this. With the engine cold, remove the radiator cap. Start the engine. If the coolant comes flying out the radiator, you have a bad head gasket.
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Thursday, January 13th, 2011 AT 8:53 PM

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