Pressure In Cooling System?
Thread Starter
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 1
From: Reno nevada
Pressure In Cooling System?
The motor seems to run fine and no anti-freeze smell. But I can fire it up cold and let it run 10 seconds, shut it off and I have pressure under my radiator cap.
I drove it and it never got hot and it over flowed my expansion tank.
I've heard of some test to see if you have combustion gasses in the anti-freeze.
I assume that I have blown head gasket?
I drove it and it never got hot and it over flowed my expansion tank.
I've heard of some test to see if you have combustion gasses in the anti-freeze.
I assume that I have blown head gasket?
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
think there is a litmus paper that you dip in the rad to see if it changes color to "bad" news.
it is curious about the pressure.
seems ole school was looking for bubbles in the coolant at the neck of the filler.
good luck
it is curious about the pressure.
seems ole school was looking for bubbles in the coolant at the neck of the filler.
good luck
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Take the radiator cap off when it's cold, start it and let it warm up. If it blows bubbles in the radiator, it's not good. IF the head gasket is leaking, it'll have a steady stream of bubbles.
Racer
Joined: Feb 2011
Posts: 252
Likes: 12
From: Fredericksburg Va.
If you have a radiator pressure tester put it on in place of the radiator cap. Start the engine and see how rapidly it builds pressure. It should build it gradually to the rated pressure of your cooling system. If it builds it rapidly or exceeds the system design pressure you have exhaust gases entering your cooling system. Time to pull heads.
Thread Starter
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 1
From: Reno nevada
If you have a radiator pressure tester put it on in place of the radiator cap. Start the engine and see how rapidly it builds pressure. It should build it gradually to the rated pressure of your cooling system. If it builds it rapidly or exceeds the system design pressure you have exhaust gases entering your cooling system. Time to pull heads.
Today I went by summit racing and bought FelPro MLS head gaskets 1142.026
They compress to .026
I was also going to straight edge the heads
