HELP!...c5 coolant surge problem
Thread Starter
Navigator
Joined: Aug 2013
Posts: 9
Likes: 0
HELP!...c5 coolant surge problem
So today I got home from the store when I turned my car off I heard a hissing sound, when I popped the hood the noise was coming from the coolant surge. The surge was really hot and I could see it steaming the main thing that was hissing was the tube connected to the coolant surge on the left. Also it looks like the tank was squirting out coolant all over the engine.. Any idea what's wrong? Do I need to drain and replace coolant? Overfill? Please help...
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
if you recently filled coolant and overfilled the system that's one thing
however
it sounds like you're boiling the coolant. remember, without pressure the coolant will boil at 212deg which is not hard to hit in a c5
the fill cap is a potential suspect if you aren't leaking coolant anywhere
ac delco replacement caps are also under 10 bucks
however
it sounds like you're boiling the coolant. remember, without pressure the coolant will boil at 212deg which is not hard to hit in a c5
the fill cap is a potential suspect if you aren't leaking coolant anywhere
ac delco replacement caps are also under 10 bucks
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
This is true if the coolant is water only. However the mixture in most cars is about 50% water and 50% anti-freeze (perhaps DexCool). A 50/50 mixture has a boil point of about 260 degrees F. without pressure if my memory is correct. So if his coolant is boiling he has a real problem.
I suspect that one of the plastic bungs on the surge tank is cracked where it attaches to the tank and that the system does not build a lot of pressure but rather pisses the coolant out the crack.
I suspect that one of the plastic bungs on the surge tank is cracked where it attaches to the tank and that the system does not build a lot of pressure but rather pisses the coolant out the crack.
