Quote:
Originally Posted by funola
Why didn't you just take the whole monovalve and take it apart at home?
If you have a healthy cooling system and engine, air in the heater core should purge itself just from driving with the heat on. The current flow created by the water pump should push the air pockets out of the heater core up to the expansion tank (highest point) and out the pressurized cap.
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I could not get to all the hose clamps to get it free. I tried, but there was too much stuff in the way.
When the engine is up to temp 80-85C, and then shut off for 20 or 30 minutes, then restarted, the heat comes out the vents for about 5 minutes. Then the air flow into the cabin is hardly warm at all.
So when it sits, the hot fluid seeps into the heater core, but its not being recirculated when the engine is running.