how to make sure that the cooling system bleeds correctly?

[Huw Powell]

> hey all, im about to switch the fan switch at the bottom of the
> radiator, and since im gonna have to drain a significant amount of
> coolant to do this, im curious as to how i can be sure that there are
> no air pockets in the cooling system when i fill it back up...

If you have the new one ready, in one hand, with a new washer/gasket on
it, and move quickly and smoothly, you should only lose a few cc's of
coolant, btdt on my 90.

But anyway, if your radiator has a bleeder on top, it should be easy to
purge to the air, since it will be in the radiator.  Letting the engine
warm up with the bleeder opened slightly should pressurize that air
right out.

If you do lose a lot of coolant, top it up from every angle possible
first (expansion tank, through bleeder hole, through top hose into
engine/head, etc.)

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/