Probably it's just clogged at the bottom of the overflow tank..
that hose nipple where the hose goes on ....junk inside there.

after removing the hose poke that spot out it with a stiff piece of
wire.  Should start to flow again.

if it's all gooked up , It would be good to take it completely off the
van and clean it out really good ..
like with hot water and dish soap.
It's not that uncommon for that spot to get clogged.  I think when these
fine machines are as old as they are, changing the coolant every year is
not too often. You never get all of the old stuff out anyway.

Scott

On 2/25/2013 9:26 PM, Bill MacLachlan wrote:
> Hi all.
> Should the coolant overflow tank drain freely through the tube that
> connects to the pressure cap?
>
> I disconnected the connecting tube  at the pressure cap, tried blowing
> through it into the overflow tank, but could not. Couldn't suck coolant
> from the overflow tank either.
> If I can't get coolant to move through the tube, how can the pressure tank
> purge/replenish?
>
> comments before I take the overflow tank off and apart :) ?
>
> thanks all
>
> Bill M
> 89 westy
>