Question about 1994 Toyota 4Runner

My toyota 4runner is overheating but i have no water leak and yet my radiator is losing water

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jamie

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Master
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You may have a blown head gasket or intake gasket you will have to have it looked at to determine the cause of the fluid loose. you may be able to find a color dye tablets that you can put in the radiator and it will change the coolant color to something that is more visible.

Posted on Feb 20, 2011

Jonah Oneal

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Toyota Master
14,092 Answers

SOUND LIKE HEAD GASKET LEAK.CHECK ENGINE OIL FOR SIGNS ANTIFREEZE CONTAMINATION..OIL WILL LOOK LIKE MILK SHAKE.IF USING WATER IT EVAPORATES AT 212 DEGREES. ENGINE COOLANT TEMPERATURE CAN CLIMB UP TO 220 DEGREES.IF OIL IN CRANK CASE LOOKS GOOD.ADD 50/50 WATER AND ANTIFREEZE. ANTIFREEZE WILL RAISE BOILING POINT TO KEEP COOLANT FROM EVAPORATING.SEE IF YOU LOSING WATER ITS BOILING AWAY LIKE WATER IN A TEA KETTLE.

Posted on Feb 20, 2011

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One possible explanation is that the leak is small and the water escapes as steam. This then would lead to no immediately visible water leak under the vehicle and being small, the coolant system is still capable of preventing an overheat. Most likely spots would be the junction of the radiator hoses either to the radiator or to the engine side. One possible way to check is use your Toyota as you normally would but before shutting down the engine after a long drive, pop open the hood and check where steam or water might be leaking.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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