engine and drivetrain Burping Again

[willie002]

Had to do some work on my heater box. I corked both the inlet and outlet of the heater core in hopes that I wouldn't introduce air in the system when I put it back together. it seems as if my attempts failed and I now have air in the system. I've seen burping talked about but never really explained. Do I just jack up the front of the car take the radiator cap off and start the engine and squeeze the hoses that are involved and let it run for a while? Or is there more to it then that?

[schoir]

That's basically it... Burping refers to trying to let air bubbles escape from inside the cooling system, usually by raising the front of the car and letting gravity do the work, with a helping hand by alternatively squeezing and releasing the hoses.  Any trapped air should rise to the surface in the form of air bubbles.

 

Make sure that your heater core valve is in completely open position (lever slid all the way to "hot") so that the coolant can circulate throughout the entire system.

 

Regards, Maurice.

[dbmw2002]

The secret to burping is in how you fill your radiator, very very slowly, as in a vacum hose syphon into the radiator from the coolant jug, dumping coolant in fast will cause air pockets and slowly will not, try it , its a lot easier

[mikebontoft]

maybe not as practical for most, but the Airlift is a neat little tool that puts the system in a vaccum and then sucks the coolant out of a bucket filling the system with it's own vacuum, leaving no need for bleeding. It does also require an air compressor/shop air.