Wouldnt a compression test show if there is a leak
like that or not . ? .

--- Jim Arnott <jrasite@eoni.com> wrote:
> Classic symptoms of an engine that needs a reseal.
> What's happening is
> that one (or more) cylinders are leaking combustion
> gases into the
> cooling system. Unfortunately a common problem. (My
> 84 is doing it as I
> write...) The solution is to remove the heads and
> replace the o-rings
> on the top of the cylinders.
>
> As long as one religiously stays on top of the
> coolant level, one can
> get away with driving it like that for a while.  You
> will need to bleed
> the system on a daily basis though.  When the heater
> is blowing cold,
> that's a sign that there's no coolant in the
> radiator.  It's filled
> with air. Remove the upper grill and loosen the 13mm
> bolt on the top
> left of the radiator rather than removing the
> expansion tank cap.
> That's the highest point in the system. If you
> relieve the pressure at
> that point, you're removing air, not coolant. After
> you burp it there,
> tighten the bolt and refill the expansion tank with
> the engine warm and
> running at 2500+ rpm. That'll get you going, but a
> reseal *is* in your
> (and my) near future.
>
> Jim
>
> Dave Vieira wrote:
>
> > I have bleed the cooling system many times yet
> still
> > air is gettin in there i donno how .. i donno
> maybe im
> > not gettin it all out.. but im pretty sure i am.
> > After i bleed it . it works good. heat ablasting
> and
> > all damm its nice .. temp is low  and all .. after
> > that i let it sit ..   .. till it gets cool again.
> >
> > the res tank is like almost full and the
> expanshion
> > tank is empty but if i loosen the cap the air
> rushes
> > out and if fills up a bit .. so i bring the res
> tank
> > down to the max line and carry on .. it works
> alright
> > . i get heat then i loose it.. when i want lots of
> > heat . it only works for a bit then its ice cold
> ..
> > ... after highway driving lots if idont check it i
> get
> > the light bulb blinkin away and i goto do the cap
> > think take the air out and refill it .. empty the
> res
> > tank.  . now im thinking could it be the
> expanshion
> > tank cap .. its lettin the water out. but .. maybe
> its
> > not bring it back in when its needed and thus
> bring in
> > air that way ?
>

=====
Dave Vieira
Hamilton, Ontario
Canada

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