A weird coolant leak!! (1 Viewer)

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alia176

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I"ve reached out to the vendor where I purchased the new radiator overflow tank and the cap from but wanted your feedback on this one. This is happening on the old Benz. Anyone have any idea why this leak is happening, even with the previous radiator cap sitting on top of the new overflow tank? Is this a manuf defect? The pic shows the new radiator cap.

 
Humm? That is interesting that the plastic over flow tank has a metal cap. Is that system supposed to be that full? In all the Toyota overflow tanks I have the cap leaks a little if the system pressure gets to high, normally the pressure is released out of the vent tube but the cap has never been a perfect seal.

The radiator cap is a different story though. I don’t know Benz stuff very well but is that really the correct cap for the overflow tank?
 
Humm? That is interesting that the plastic over flow tank has a metal cap. Is that system supposed to be that full? In all the Toyota overflow tanks I have the cap leaks a little if the system pressure gets to high, normally the pressure is released out of the vent tube but the cap has never been a perfect seal.

The radiator cap is a different story though. I don’t know Benz stuff very well but is that really the correct cap for the overflow tank?

I think I figured out my error but still researching something else. I'll post up once I finalize the situation.
 

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