rad not full when cap is taken off
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Joined: Mar 2007
Posts: 86
rad not full when cap is taken off
ive got a question but first ive have seen many post of problems with overheating on lt1, ok here we go, when the car is cooled down i take off the rad cap and the coolant isnt to the top.. i have checked for leaks, ripped hoses, & the metal tube that goes into the resivoir nothing. any ideas as to why?? by the way the car doesnt overheat at all the temp stays normal in the middle...any ideas would help thank you..
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Joined: Mar 1999
Posts: 2,068
From: Kernersville, NC
Re: rad not full when cap is taken off
Coolant system pressure tester......look up my other posts on it.
The coolant has to be going somewhere.....you need to find out where it's going. The above should help isolate it if the problem is in the engine. Is the overflow reservoir between the hot and cold marks? What is the level with the engine stone cold and the engine warmed up?
One simple possibility is that there could be a small hole in the hose that leads to that reservoir(from the radiator neck). That would cause the level in the reservoir to never move....due to it leaking on the ground. It would also prevent a vacuum from being generated to pull the coolant from the overflow back into the engine when it cools off(leaving a half empty radiator and overfilled reservoir).
The coolant has to be going somewhere.....you need to find out where it's going. The above should help isolate it if the problem is in the engine. Is the overflow reservoir between the hot and cold marks? What is the level with the engine stone cold and the engine warmed up?
One simple possibility is that there could be a small hole in the hose that leads to that reservoir(from the radiator neck). That would cause the level in the reservoir to never move....due to it leaking on the ground. It would also prevent a vacuum from being generated to pull the coolant from the overflow back into the engine when it cools off(leaving a half empty radiator and overfilled reservoir).
Last edited by ACE1252; Jul 13, 2012 at 12:47 PM.
Thread Starter
Registered User
Joined: Mar 2007
Posts: 86
Re: rad not full when cap is taken off
Coolant system pressure tester......look up my other posts on it.
The coolant has to be going somewhere.....you need to find out where it's going. The above should help isolate it if the problem is in the engine. Is the overflow reservoir between the hot and cold marks? What is the level with the engine stone cold and the engine warmed up?
One simple possibility is that there could be a small hole in the hose that leads to that reservoir(from the radiator neck). That would cause the level in the reservoir to never move....due to it leaking on the ground. It would also prevent a vacuum from being generated to pull the coolant from the overflow back into the engine when it cools off(leaving a half empty radiator and overfilled reservoir).
The coolant has to be going somewhere.....you need to find out where it's going. The above should help isolate it if the problem is in the engine. Is the overflow reservoir between the hot and cold marks? What is the level with the engine stone cold and the engine warmed up?
One simple possibility is that there could be a small hole in the hose that leads to that reservoir(from the radiator neck). That would cause the level in the reservoir to never move....due to it leaking on the ground. It would also prevent a vacuum from being generated to pull the coolant from the overflow back into the engine when it cools off(leaving a half empty radiator and overfilled reservoir).
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