Antifreeze and Engine Coolant
Radiators
BMW 3-Series

What should you do if you tried radiator sealant but your car is still leaking antifreeze?

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2004-09-30 10:20:07
2004-09-30 10:20:07

Check the hoses and around the clamps to see if it is possibly leaking from there. Radiator sealer works fine on small leaks.If all else looks good you are on the way to have your rad repaired.(also check around the water pump,when they go they leak bad!!) if the sealant doesn't work and you can see where the leak is coming from, then remove the radiator, if necessary, drain it. you then need to clean the area where the leak is with a wire brush and alcohol. then get a small plumbers torch and some resin core solder and seal the leak. if that doesn't work you may have to have it recored or buy another one.

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Call Around; Find A Radiator Shop or A Mechanic That Can Pressure Test Your Radiator. This Should Help

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Use a 50/50 mix of antifreeze and water and fill SLOWLY to prevent an airlock through the top of the radiator

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Is there white smoke coming out of the exhaust? If so, you might have coolant leaking into the engine compartment. Check your oil's consistency.

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You should replace it the radiator to play it safe because theres a good chance that it may be leaking or will leaking but check with your dealer or autoshop.

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you probably have a leaking heater core....you can replace it or bypass it

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There should be a drain plug on the bottom of the radiator, I believe the plug is white.


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