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Cooling System Weirdness - Expansion Tank Cap?
So for the past three months that I've had my 85.5 back on the road, the cooling system has been pretty consistent - drive 40 miles to work....drive back...take the 12mm and bleed a little more out of the top hose. Next morning, coolant a little low...add more coolant...and repeat - day after day but with a little less bleeding required as time moved forward. Top hose always pressured after warming up.
Now, suddenly, the top hose feels squishy after warming up....and the bottom hose does not feel warm enough - almost like coolant may not be circulating at all. And yet the engine is not overheating...in fact feels a bit cooler. Also...the coolant tank seems to overfill very easily now....and is always above the maximum mark after a long drive.
Could this be something as simple as a defective expansion tank cap...not holding pressure?
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