Cooling system pressure

ROY · 11-08-2012, 01:26 PM

I'm having an issue I have never heard of or had experience with.My cooling system [SBF]is maintaining a high pressure even after long periods of shut down[weeks]! I noticed external weeping of coolant at the bottom of the heads and at the ends of the intake manifold.I checked the expansion tank,it was empty!I went to open the radiator cap so I could drain the system,it had enough pressure to blow the cap up as I turned it,it hit the stops then puked fluid!I pulled the intake and heads[aluminum],no signs of blown gaskets! Any ideas? I'm lost on this one! ROY.

11-08-2012, 01:26 PM	#1
ROY Junior Member Join Date: Oct 2007 Posts: 15 Likes: 0 Liked 0 Times in 0 Posts	Cooling system pressure I'm having an issue I have never heard of or had experience with.My cooling system [SBF]is maintaining a high pressure even after long periods of shut down[weeks]! I noticed external weeping of coolant at the bottom of the heads and at the ends of the intake manifold.I checked the expansion tank,it was empty!I went to open the radiator cap so I could drain the system,it had enough pressure to blow the cap up as I turned it,it hit the stops then puked fluid!I pulled the intake and heads[aluminum],no signs of blown gaskets! Any ideas? I'm lost on this one! ROY.