[Vwdiesel] Getting rid of an air pocket

[Val Christian]

That's an OK strategy, if you don't mind taking the rear bracket off the
power steering pump, and all that comes with it.  On my 91, I pull the
lower hose off the radiator.  It doesn't get everything, but it saves
allot of time.

Nate, don't go with the generic thermostat.  Learn from my experience and
buy a quality one with a beefy rivet on the plate serving as a valve at the
rear of the thermostat.

Val

ps: As for burping the cooling system, I've tried pulling one of the sensors
in the plastic flange at the front of the cylinder head.  It let allot of
coolant out, but I always found that running the system through a couple
of hot/cold cycles with RPMs on the engine, cleared things.  I think the
heater core may be higher in the system than those sensors.


>
> Here's a question:  We all know how much of a pain its to drain the cooling
> system (no drain valve, pull that little stubby heater hose off between the
> pump and steel heater tube), at least on the A-2s. You also have to pull the
> lower coolant hose, but its easy.
>
> It it possible to get the same results by removing the thermostat housing
> (after the lower hose is removed)? I plan on replacing my T-stat soon and
> will give this a try. I would imagine I'll get a huge rush of coolant when I
> do this!
>
> --Nate
>
> "boyer at cts.com" wrote:
>
> > I have been filling my VW from the upper hose for the last ten years
> > or so...but in the last several, I have also drilled an 1/8" hole
> > in the flat part of the thermostat to facilitate air expulsion.
> > Doesn't have to be an eighth...but whatever looks right.
> >
> > Some thermostats are built this way at the factory, but I can't
> > recall if the Wahler (sp) I buy for the VW are so set up.
> >
> > Works like a charm on the old IH, though...and its five gallon
> > cooling system!
> >
> > Regards,
> >
> > Chris Boyer
> >
> > LBaird119 at aol.com writes:
> > >> Problem was not the thermostat.  Seems like there is an air pocket and
> > it's
> > >> been recommended that the cooling system be "burped".
> > >>
> > >>  Since it's a little heavy and awkward to hold the Jetta over my
> > shoulder
> > >and
> > >> pat it's back, can someone recommend another method?
> > >>
> > >  Simple, you just fill it through the upper hose.  Generally after a
> > couple
> > >of heat/cool cycles the bubble works it's way to the reservoir.
> > >     Loren
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