Coolant

[GORBS88]

ok, i have been havin troubles with my car for over a month.....once in awhile it will presureize and pump coolant into over flow then onto ground....wont do it all the time and wont heat up.....somtimes while drivin and others while idling....i am pullin my hair out...help....did a block test to check h/g and it passed 3 times...no gasses in the coolant....went through 5 rad caps and many t-stats....dont know what to do....mabe water pump pullin in air?????? i am ready to burn car.....the weird thing is it wontheat up....never goes over half on gauge but will puke it out....no air bubbles in coolant...no oil in water or vice versa....grrr....anyone can help.....??Is there anything i am over lookin??? there are only so many things to pressurize the system....i dont want to pull heaad if not the problem....the block test is very accurate and it says no troubles.......anyone??

 

[ddavisaf]

My friends car does it too. His does it because his headgasket is almost bad. It's got a small hairline pull. What are your compression test numbers?

 

[GORBS88]

My friends car does it too. His does it because his headgasket is almost bad. It's got a small hairline pull. What are your compression test numbers?

Comp test was 155-155-155-160....so thats why i am pullin my hair out.....does his car do the exact same thing??? puke coolant out but doesnt overheat??

 

[ddavisaf]

The first couple times yeah. then it started to overheat

 

[blueberry_dsm]

try blowing compressed air into te cylinders, and watch for bubbles in the coolant resivour. sometimes this test will show a leak that a bad h/g or warped head is present, when a compression test wont.

shane