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Why does the coolant boils and overflows to the radiator reservoir leaving the radiator low in coolant thus will overheat replaced 2 radiator caps thermostat reservoir tank and hoses 93 Camry V6 LE?
Wiki User
∙ 16y ago
TO MAKE A LONG STORY SHORT I HAD THE SAME PROBLEM. I FOUND THAT THE COOLANT OUTLET CAP WAS NOT PROPERLY SEALING DUE TO CORROSION ON THE SEAT LIP OF THE OUTLET. THIS WAS CAUSING A WEEPING OF COOLANT TO THE RESERVOIR AND A LOSS OF PRESSURE REQUIRED TO PREVENT BOIL OVER. MY CHEAP SOLUTION WAS TO CAP THE COOLANT LINE TO THE RESERVOIR. PROBLEM SOLVED.
If you replaced two caps then I doubt those caps are the problem...there is something else causing the pressure to be too great and thus flow out.
You could have a bad head gasket, which allows the pressure from the combustion chamber to flow into the cooling circuit creating to great of pressure for the cap, and thus, flows out.
Just capping that line cripples the functionality of your cooling system, it is designed to make use of the overflow tank, you shouldn't just disable it like that.
IF your head gasket IS going out, the blocking the overflow tank will cause EXTREME pressure to build up, now your going to blow the radiator and your engine. Cheaper to fix the head gasket and keep the old radiator then replace a radiator and a head gasket.
On a cold start, stand behind your car, someone starts the car, smell for coolant. When the car gets cold, the higher pressure in the cooling circuit could cause coolant to flow in the engine, so on a cold start, you may smell it. After it starts though, the coolant may not flow into the cylinders.
Get a coolant tester kit to check for exhaust gases in your coolant, you can find them at your automotive stores.
You may not see white smoke coming from the tail pipe after the car has warmed up because the coolant may not flowing into the engine combustion chamber while it is running...but you might see white smoke.
I'm diagnosing my fiance's car right now with this same situation...new water pump, new radiator cap, etc etc...head gasket is the next possibility.
Wiki User
∙ 16y ago
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Fixer pluged radiator or caused thermostat to stick shut.
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Low coolant, stuck thermostat, failed waterpump, plugged radiator, inoperative radiator fans, etc.
