Still overheating, what should i do???
Thread Starter
Registered User
Joined: Jan 2007
Posts: 144
From: Conroe, Tx(outside Houston)
Still overheating, what should i do???
I drove it and it over heated again, no leaks but it was verry verry low, i filled it and limped it home, i guess it is coming outta the exhaust so slowly it isnt funny, should i port my vette heads i got lating around and swap them out while i got the heads off and warranty the new opti that is already on it??? Thanks for any input guys.
Registered User
Joined: Nov 1998
Posts: 2,761
From: Louisville, KY
I chased a coolant loss problem once for about a month. I even had a radiator pressure tester, and it wouldn't leak down when pumped up. However, it would still be about a half quart low the next day. Then one hot day, I came out of the doctor's office to see a pool of coolant under the car. It turns out the radiator had a crack in it. Theory is the crack would expand once the coolant was pressurized and hot. I never once saw any coolant under the car before that day. Guess it evaporated, or enough leaked out during driving so the coolant level was below the crack. Just something else to start checking.
Guest
Joined: Sep 2004
Posts: 0
It's not air bound
If you have driven it and got low and you added more. It's not air bound. Bleeding it more could introduce more air in the system. The simplest way to deal with the coolant is add until full. Let it run until you see movement of the coolant. Add as needed. Close it up and let it sit over night. check first thing while still cold and add as needed then drive. check again first thing next morning.
The whole time you are doing this, you have to be sure the overflow resevoir is topped off.
2 things you should be doing incidentally are a pressure test of the coolant system. The other is a leak down test. Between those 2 tests, you will find a possible head gasket problem. Unfortunately if you have an intake gasket problem, they can be harder to find. You may need to add die to the coolant so you can find a leak easier since as suggested, it may be leaking externally and evaporating once it hits the hot exterior of the block.
The whole time you are doing this, you have to be sure the overflow resevoir is topped off.
2 things you should be doing incidentally are a pressure test of the coolant system. The other is a leak down test. Between those 2 tests, you will find a possible head gasket problem. Unfortunately if you have an intake gasket problem, they can be harder to find. You may need to add die to the coolant so you can find a leak easier since as suggested, it may be leaking externally and evaporating once it hits the hot exterior of the block.
Registered User
Joined: Aug 2002
Posts: 4,676
From: Melvindale, MI, US
If you have driven it and got low and you added more. It's not air bound. Bleeding it more could introduce more air in the system. The simplest way to deal with the coolant is add until full. Let it run until you see movement of the coolant. Add as needed. Close it up and let it sit over night. check first thing while still cold and add as needed then drive. check again first thing next morning.
The whole time you are doing this, you have to be sure the overflow resevoir is topped off.
2 things you should be doing incidentally are a pressure test of the coolant system. The other is a leak down test. Between those 2 tests, you will find a possible head gasket problem. Unfortunately if you have an intake gasket problem, they can be harder to find. You may need to add die to the coolant so you can find a leak easier since as suggested, it may be leaking externally and evaporating once it hits the hot exterior of the block.
The whole time you are doing this, you have to be sure the overflow resevoir is topped off.
2 things you should be doing incidentally are a pressure test of the coolant system. The other is a leak down test. Between those 2 tests, you will find a possible head gasket problem. Unfortunately if you have an intake gasket problem, they can be harder to find. You may need to add die to the coolant so you can find a leak easier since as suggested, it may be leaking externally and evaporating once it hits the hot exterior of the block.
on an LT1???
Registered User
Joined: Feb 2007
Posts: 17
From: WI
I chased a coolant loss problem once for about a month. I even had a radiator pressure tester, and it wouldn't leak down when pumped up. However, it would still be about a half quart low the next day. Then one hot day, I came out of the doctor's office to see a pool of coolant under the car. It turns out the radiator had a crack in it. Theory is the crack would expand once the coolant was pressurized and hot. I never once saw any coolant under the car before that day. Guess it evaporated, or enough leaked out during driving so the coolant level was below the crack. Just something else to start checking.
My friend had the same thing happen to his SS. I tried helping him for months with that leak. Finally we found it almost the same way you did.
Thread Starter
Registered User
Joined: Jan 2007
Posts: 144
From: Conroe, Tx(outside Houston)
Well, i will keep messing with it tomarrow, the radiator was low today, so i will keep looking, i hope it is just warped heads...err blown gaskets, i got some vette heads lying around...
Registered User
Joined: Apr 2005
Posts: 1,546
From: Florence, Kentucky
Put a pressure tester from Autozone on it and then watch all the hoses. You'll probably find a leak. I've had several coolant leaks and most of the time its from the little hoses that go into the water pump. You can usually only see those leak from the bottom.
A leak will cause it to lose pressure. If it doesn't hold pressure when it warms up the water will boil. Then it will boil out of the overflow tank. I've had this happen at least twice in the ten years I've had my car.
A leak will cause it to lose pressure. If it doesn't hold pressure when it warms up the water will boil. Then it will boil out of the overflow tank. I've had this happen at least twice in the ten years I've had my car.
Thread
Thread Starter
Forum
Replies
Last Post
Noct
General 1967-2002 F-Body Tech
2
Jul 14, 2015 01:18 AM
warmeck
General 1967-2002 F-Body Tech
19
Apr 16, 2015 05:50 PM