quote:How does one get the air bubble out of the system ? ? ?
Use the air bleed(s) at the upper part of the radiator.
The way that I do it is to fill the system at the swirl tank, then bleed any air at the radiator bleeder. Top off the swirl tank as needed, usually about half way between the inlet pipe (upper pipe) and the bottom of the filler neck. Replace the swirl tank cap. Make sure that the overflow tank is half to two thirds full. Then run the engine for 10 or 15 minutes and shut it off. Let the engine cool for about half an hour (or longer) and slowly remove the swirl tank cap. Bleed at the radiator again, and top off the swirl tank. Check the overflow tank and add coolant (if necessary) so that it is about half full. When doing the above, leave the heater valve in the open position so that you get any air out of the heater hoses and core.
This works for me and I never have a problem.
BTW, is your temp sender mounted in the swirl tank or the block? If it is in the swirl tank and the coolant level in that tank is low, you will get incorrect readings on the temp gauge. The sender should be located (or relocated) in the engine block.
John