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My ranger is losing radiator fluid from the overflow but not the radiator , i can also smell radiator fluid but it's not overheating and i can't find a leak.

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Losing fluid from the relief port is a sign of the coolant pressure being too great or just a cap that has had better days. The smell of hot coolant lingers so not seeing a leak is totally possible. Unfortunately, there are other problems that could cause this such as a bad head gasket which will introduce high pressure into the cooling system and thus forcing coolant out through the relief (overflow).

I say change the cap, it's cheap enough and probably original. Make sure the coolant is clean and mixed properly. If it persists, there is a dye you can put in the cooling system that reacts with combustion gases and can be seen under and ultraviolet light. If you are getting combustion gases into the cooling system, the repair is quite expensive.

Posted on Mar 29, 2015

Testimonial: "Thank you Vincent , I will try what you said and hopefully the cheapest is the way to go!"


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