Car Leaking Coolant
I had a coolant leak coming from the front of my ls1. It would only happen when giving it pretty good gas. I did a pressure test on the system(at auto tech school). With more pressure the leak sped up. I pressure tested the radiator cap and it was holding too much pressure before popping off to release.(((((((THAT WAS MY PROBLEM and What caused the system to hold too much pressure)))))) I bought a new gm radiator cap and a water pump incase. Took the water pump off and it seemed fine. So I just took the new water pump gaskets out of the new water pump box and only installed the new gaskets. I put it all back together and haven't had a problem since. Took the new water pump back to the dealership and got my two hundred something dollars back

1pressure test the system and cap
2maybe you can get away with changing water pump gaskets and cap like I did
Last edited by SSnemesis; Nov 18, 2008 at 03:04 PM.

