This question has nothing to do with buicks, however, I have come to trust the opinion of the members of this site so I've come here to ask...
I'm helping a friend of mine restore a 1968 Coupe DeVille with a 472ci V-8.
When he first bought the car, unbeknownst to everyone the T-stat was stuck shut, and when he went to start the car and let it run, it obviously overheated. When he shut it off, he heard a loud gurgling/bubling noise then about 5 mins later the lower rad hose exploded all over the place.
Since then I've replaced the thermostat, hose and refilled the cooling system and let the engine run up to temperature. It no longer overheats, but after shutting the engine off the gurgling/bubling noise is still there for about 10-15 minutes after shutting the engine off, then slowly goes away. I've eliminated air bubbles as the cause of this noise since I've bled the system many times of air.
My theory is that maybe the head gasket is blown and is allowing combustion gasses into the cooling system slowly until the pressure is vented. This is all the detail I can remember right now.
Any help would be appreciated!
Thanks!
Ben
I'm helping a friend of mine restore a 1968 Coupe DeVille with a 472ci V-8.
When he first bought the car, unbeknownst to everyone the T-stat was stuck shut, and when he went to start the car and let it run, it obviously overheated. When he shut it off, he heard a loud gurgling/bubling noise then about 5 mins later the lower rad hose exploded all over the place.
Since then I've replaced the thermostat, hose and refilled the cooling system and let the engine run up to temperature. It no longer overheats, but after shutting the engine off the gurgling/bubling noise is still there for about 10-15 minutes after shutting the engine off, then slowly goes away. I've eliminated air bubbles as the cause of this noise since I've bled the system many times of air.
My theory is that maybe the head gasket is blown and is allowing combustion gasses into the cooling system slowly until the pressure is vented. This is all the detail I can remember right now.
Any help would be appreciated!
Thanks!
Ben