01-17-2011, 01:31 PM
Is there a small weeper on the 12 o'clock of the thermostat? Some come with this from the factory but I just drill it out to 1/8" (I think). I will help to purge the air from your system even when the thermostat is not open.
May I assume you checked your coolant level before you removed the thermostat?
Try to flush the heater core. I recommend CLR but ONLY for the core in a closed loop. If the core is old though, CLR may just send it over the edge and eat the plugs away and cause a leak. Worst case, you spend a few $ of a new core. It is worth a try.
Flushing the engine coolant may be worth while too. You may have clogged passages or a buildup of sediment in the radiator.
Can you provide a better description of the conditions that caused you to change the thermostat?
May I assume you checked your coolant level before you removed the thermostat?
Try to flush the heater core. I recommend CLR but ONLY for the core in a closed loop. If the core is old though, CLR may just send it over the edge and eat the plugs away and cause a leak. Worst case, you spend a few $ of a new core. It is worth a try.
Flushing the engine coolant may be worth while too. You may have clogged passages or a buildup of sediment in the radiator.
Can you provide a better description of the conditions that caused you to change the thermostat?
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.
mokin:
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mokin:Roads? Where we're going, we don't need roads.