Coolant Leaking from the Radiator Overflow

um....... did you dilute the anti freeze or was it premixed? pushing that much water out could mean a headgasket failure.

 

Did you burp system of air when refilled? There is a small valve on hard coolant line that assists with burning. Open it as you refill coolant. You can have air pockets. I'd try that before going head gasket route. Why was there only water in system? Ongoing problem?

 

Mine was doing that and it turned out to be a bad radiator cap on the reservoir tank.
The cap wasn't sealing so the system couldn't pressurize properly.

 

ditto on the radiator cap.

they don't hold pressure.

 

dang totaly slipped my mind on that one. thats alot cheaper than a headgasket!

 

Now now snowwy, If they don't hold presure than the next time your engine temp is about 200 or so you twist that baby off and tell me what happens after the fact. Just be careful now and do it at your own risk

 

Hopefully it is just the cap. But super hauler is probably right if its not that then its a good possibility it is the headgasket leaking and getting to much presure in the coolant system. Good luck I hope it turns out to be the cap.