collapsed?
Thread Starter
Le Mans Master
Joined: Nov 2004
Posts: 6,128
Likes: 21
From: North Alabama
Originally Posted by wattac2
The vacuum relief in the radiator cap has failed. It lets air in the system when it cools. Either that or your overflow reservoir isn't vented. Depends on the year of your car.
Burning Brakes
Joined: Apr 2004
Posts: 847
Likes: 0
From: Des Allemands LA
Top hose shouldn't need a spring, this is for the bottom hose since it is the suction side of the water pump. I also assume it collapses after the motor is shut off and cools down?
ltlevil
ltlevil
Thread Starter
Le Mans Master
Joined: Nov 2004
Posts: 6,128
Likes: 21
From: North Alabama
Originally Posted by ltlevil
Top hose shouldn't need a spring, this is for the bottom hose since it is the suction side of the water pump. I also assume it collapses after the motor is shut off and cools down?
ltlevil
ltlevil
Drifting
Joined: Mar 2003
Posts: 1,608
Likes: 3
From: Canberra AUSTRALIA
St. Jude Donor '05-'06
How about an air pocket. A friend had air in his system for almost a year till he "burped it".
With the engine cool take of the top radiator hose from the engine side and make sure it is full of coolant. I have seen people who have put a filler/thermostat fitting that allows the coolant to be topped up righ at the engine. This also makes sure that all air gets out.
May also be a stuck thermostat.
If the pump is sucking through the radiator and there is air at the top then is sort of makes sense that if the thermostat is stuck that the top hose will "collapse" as you have pressure on the bottom but no flow at the top.
Hope this helps.
Pete
With the engine cool take of the top radiator hose from the engine side and make sure it is full of coolant. I have seen people who have put a filler/thermostat fitting that allows the coolant to be topped up righ at the engine. This also makes sure that all air gets out.
May also be a stuck thermostat.
If the pump is sucking through the radiator and there is air at the top then is sort of makes sense that if the thermostat is stuck that the top hose will "collapse" as you have pressure on the bottom but no flow at the top.
Hope this helps.
Pete
Race Director
Joined: Oct 2000
Posts: 14,997
Likes: 79
From: central FL, near the beach.
Originally Posted by Jclgodale3
hmm? I just remembered, I put a plug in the overflow tube while taking the radiator out and putting it back in...suppose this is the culprit?
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Burning Brakes
Joined: Apr 2004
Posts: 847
Likes: 0
From: Des Allemands LA
I wasn't real clear in my last post.What I meant was I suppose the TOP hose collapses after the engine is run and then cools off. And I agree with everyone above saying there is an air pocket somewhere, air expands when engine warms up and contracts when cooled down. This is complicated by the fact your vent is plugged off.
ltlevil
ltlevil