Blue2001SS

iTrader: (2)

I have a Camaro with a p1sc. Just recently switched to an aster bracket, which you also have to change to a ls2 water pump. Went to take the car to a car show and it started blowing water out the over flow. Took the thermostat out and ran it. Still pushed water out. Took the belt off and it still pushed water out. So I went home and put head gaskets on it.

Now I can drive it for a while with no issues. Drove it to work today and it pushed water out the over flow when I parked. I did not even hit boost today.

The other day I let it run for 30 mins at my house, drove it around and no issues. Then went to pick up my GF and it spit out when I got to her house.

What could the issue be to where it would not happen all the time?

Any help would be appreciated.

Gonoma

iTrader: (15)

Bad radiator cap?

hellbents10

iTrader: (10)

Might just have air in it, jack up the front as high as you can and run the car with the cap off.

Ace111799

iTrader: (6)

Did you accidentally switch the radiator overflow tube with the steam vent tube? They are right over one another on the radiator under the cap. I did this same thing and had the same symptoms you are describing. If they are switched your cooling system won't pressurize.

Blue2001SS

iTrader: (2)

Well I feel like a retard but I did have my vent line and overflow line switched on the radiator. My car got some ls9 head gaskets out the deal. haha. Thanks for the help.

11SECSS

iTrader: (199)

Glad you found the problem without causing any major problems.

Ace111799

iTrader: (6)

That's funny. I'm glad I'm not the only one.

BAD ASS TA WS6

iTrader: (5)

Nice easy catch fellas

JaYZeig

iTrader: (11)

was gonna mention to you about the lines being switched, my 99 trans am did the exact same thing when I made that mistake..lol