Need help, well i rebuilt my 2001 ls1 pontiac ws6 ta and now when i start it and when it gets hot and i give it gas water blows out the raditor cap. What did i do wrong? Did i put the head gaskets on wrong and i just did how the instuctions told me.

 

Sounds like an air pocket in the cooling system, flush it and see what happens! Unless I'm reading it wrong, what does your temp gauge say?

 

I don't know what you used for head gaskets ..
But factory gm head gaskets .....
Have printed on them which way the go..do you remember seeing that?

 

The temp is normal 190/200 but when i driving and everytime i hit the gas water comes out the overflow then it starts going up cause the water low. And i have flushed it and still comes out.

 

I bought victor reinz gasket kit

 

And yes they had the printed way to go on.

 

No smoke out of the exhaust right?? Did you flush it with the car running and a water hose in the radiator??

 

No smoke and i bought the kit to flush it.

 

Hmmmm... Not sure I definitely thought it is air in the system and its not over heating. I would also think you would know if you put the gaskets on the wrong way. Not sure man

 

Thank you . And i no i put those gaskets on rt. But thats what all my friends here telling me that maybe i messed up and now i am second guessing myself . But thank you.

 

Your not leaking water anywhere correct? Just blowing out of the radiator?? Does it stop blowing the water out if you let it run for a while? Or does it do it immediately? It could realistically on,y be a couple things for the cooling system I.e coolant temp sensor, thermostat, radiator (air pocket), and water pump

 

u turn your heater on to get that air pocket out? You squeeze some of the air out of the hoses while the cap is off?

 

Didn't ask because I figured he rebuilt the motor then this would be common sense....I'm still leaning towards an air pocket. Let us know

 

Before you do any of listed above get yourself a new radiator cap, I know some might think its crazy, but I have seen countless cooling problems solved by a new rad cap. It is the cheapest route at like 7-10 dollars to eliminate, its worth a shot. The springs in the cap lose tension and it allows coolant to blow past it. Just my 2 hope you get it fixed.

 

That is a great tip, that's why I asked if it is doing it all the time or after it warms up! We need more info!!

 

Genius! I bet this fixes his problem.

 

Had the same problem after i bought my car changed the cap and no more problem

 

I changed the cap and still blowns out under the cap and comes out of the overflow. And when it cold and i leave the cap off and i go to start it blows a big stream out the radiator . Its got to b the head gasket wouldnt you think. I hope not but my lucksucks. Thanks everyone for the ideas.

 

Nice t.a. I have the same looking one but the dam cooling problem really sucks.

 

The only time it stops coming out if its almost dry and then its starts moving the temp up.