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Radiator reservoir foamy - Focus Ford Cars & Trucks

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Generally, when foam exists in the radiator, you have combustion gases entering the coolant system, and the cause may be a bad head gasket or a cracked cylinder head and in some cases may be an intake manifold gasket leak. If you open the radiator cap (make sure its not under pressure) smell the air near the radiator cap opening while the engine is running and if it smells like exhaust fumes then you have the problem as I first stated.

Posted on Apr 16, 2014

  • Bambenek Auto LLC
    Bambenek Auto LLC Apr 16, 2014

    In some instances, Low coolant level can create this problem also.

  • Edward Bilawchuk
    Edward Bilawchuk Mar 29, 2017

    Thx. I will check that, but in the meantime, I have driven the car for appr. 2 wks w/no ill effects. I will be emptying the coolant reservoir and refilling the coolant to the proper level(s). Thx again. Ed B.

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My advices is flush your cooling system, why you ask/what is cause your problem of the foaming in your reservoir, someone might of mistakenly add washer fluid instead of antifreeze .Windshield fluid does foam up when it gets mixed up with other fluids. So flush your cooling system and reservoir out completely.then add a 50/50 mixture of water and antifreeze. just to let you know after time the foaming will stop and case no problem.

Posted on Apr 16, 2014

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Posted on Jan 02, 2017

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2 Answers

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Bill B

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