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Old 03-22-2002, 01:33 PM
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pmizell pmizell is offline
Benz Zealot
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838
Angry Coolant overflow probs after head gasket change

Hey guys, need some help here please --

Recently replaced my head gasket and I'm now experiencing very hot running temps (110 to 120). Aux fans work fine. Apparently I have a leak in the coolant system somewhere, because I get coolant overflow when high temperatures are reached, even when driving. Expansion tank cap just replaced along with thermostat. All hoses are tight. Any other ideas where the leak/problem is coming from?

Does the overflow tank itself pressurize and possibly a bad one could be the culprit? How about the expansion tank?

I'm stumped. The radiator is only about 6 months old.

Any help appreciated.



'91 300E, 208k miles
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