I have followed the procedure in the how to thread, but still get lots of that gurgling. I think I will unhook the heater core hoses and flush out the core. Any thoughts or suggestions? Thanks.

 

Reverse the heater hoses and idle the engine with the heater on with them that way for a bit.
Then switch them back.

 

Are you thinking the core is plugged? What's the logic behind this method.

 

Interested in this answer also. It's been a PITA for a month now. Looking for any tricks.

 

When you get a stubborn air pocket in the heater (thats where the gurggling is coming from) by reversing the coolant flow through the heater you can force it out.
This works 99% of the time with really stubborn air pockets.

 

Thanks a lot spike, I'll give it a try and let you know.

 

Should there be coolant in the hoses when i take them off ? I think there should be and i think i've got bigger problems like the head gasket. Whenever i try to bleed the air out i add coolant. It must be going somewhere.

 

bump.

 

You must have coolant in the heater core hoses. A simple test is remove both hoses and pour distilled water in one hose, you should get water out the other end. Try both ways to be sure you have no blockage or air trapped in there. If the water flows easily both ways then reconnect the hoses and try again. If you keep getting air in the system then you have a leak somewhere.