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Steve Tinker · 05-26-2015, 02:19 PM

If you have excess pressure in the cooling system then the pressure must be coming from somewhere.
1)It can't be the pump as I doubt it could compress up to ~ 20psi even with near boiling point water.
2) It could be a blocked engine / radiator vent line (#11 & 12 in diagram) but ??

I'd hate to think that you have a cylinder head crack opening up when hot and combustion gasses are "pumping up" the cooling system....

05-26-2015, 02:19 PM	#11
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	If you have excess pressure in the cooling system then the pressure must be coming from somewhere. 1)It can't be the pump as I doubt it could compress up to ~ 20psi even with near boiling point water. 2) It could be a blocked engine / radiator vent line (#11 & 12 in diagram) but ?? I'd hate to think that you have a cylinder head crack opening up when hot and combustion gasses are "pumping up" the cooling system.... __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.