Heater Problem
There's a definite difference in temperature between the inlet and outlet hoses to the heater core (based on how long I can hold my fingers on the metal hose clamps for the two hoses). I disconnected the two hoses and flushed the heater core. I mixed up some Prestone Radiator Flush with boiling water, poured it in, and let it sit for 40 minutes. Some particulate crud came out but not a lot. Rinsed and repeated in backflush direction. Somewhat more crud but still not a lot. I reconnected the hoses and not much has changed--still just lukewarm air.
To bleed the system I elevated the plastic coolant tank and pulled back the return hose to open the bleed hole in the hose.
How much of a temperature difference should I expect between the inlet and outlet hoses? Do I need to improve my bleed procedure?
BTW, I ended up adding about 44 ozs of water and G12 to what was already in the system. There must have been some air in the system because the coolant level was just a touch below the MIN line at the beginning. I've also noticed when it's rainy or cool/humid there's some vapor coming from the radiator area. I'm wondering if I have a slow radiator leak and that's allowed some water/G12 to escape.




