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Allow the car to cool. Remove radiator cap. Add water or coolant to fill radiator. Start engine leaving cap off. check to see if coolant is circulating in radiator. Locate upper rad hose, and squeeze to move air bubbles out, or to ecourage circulation. If large air bubble works its way out, add coolant to fill. Once coolant starts to expand and spill out, replace cap. Watch temperature gauge to esure the problem has been rectified. You may have to repeat this procedure.

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14y ago
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12y ago

I assume this means to remove air from a cooling system in an automobile. With engine warm and running, park the car going up a hill and remove the radiator cap. Careful with the steam - use a rag or gloves. The idea is the air bubble will move forward out of the heater and then you can top off the radiator.

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Q: How do you remove air from radiator?
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