OverHEATTING need help

[5Liter1990]

Hey guys...
Day two of my car overheatting and i cant figure out whats the problem when shes cold she doesn't draw from the overflow and she never has antifreeze/water in the radiator i cant any leaks anywhere everything is as tight as can be. Oil looks fine and im not getting white smoke out the exhaust. i feel like i can't put enough antifreeze/water in her. Once in a while if i release some "air" pressure from the radiator when shes hot she will draw from the overflow and be ok but not working anymore... Need help asap!! Thanks

 

[Fett]

Is your overflow tank overfilled? If you can't find any leaks, is it possible that your cap is allowing coolant to piss out the whole time? You figure a 16lb cap only opens at 16lbs of pressure...but if it is bad maybe it is allowing coolant out at a very low pressure.

I don't know...just a thought.

 

[5Liter1990]

Overflow tank is at best underfilled but always manages to fill up more and more, i just bought a new radiator cap thinking that might help something.... no dice the only thing i havent replaced is the thermostat, and i see no leaking or even spots where antifreeze was leaking before i opened the hood ex. while driving

 

[Fett]

Is your overflow tank broken/cracked?

When I removed mine last week I noticed it had a crack about half way down. It had been leaking coolant the whole time, but it was at such a pace where I didn't notice it.

 

[5Liter1990]

I dont think so but i cant see it being, the car looses coolant too quickly for it to be a slow leak

 

[Strype]

I dont think so but i cant see it being, the car looses coolant too quickly for it to be a slow leak

You're gonna have to check everywhere with it idling at normal temp with a flashlight.

Sometimes you can have a leak coming from the a freezeplug on the back side of the motor and it will hit the exhaust. Do you smell antifreeze? Have you put more than 2-2 1/2 gallons in it? If so you have a leak.

Also check by the thermostat housing, the back of the intake. I've had leaks there before. The heater core is also a culprit sometimes

 

[95cobraguy]

change your radiator cap.