Kevin;
        At TDC the valves are closed, otherwise you will never pressurize
the cylinder. I had to make sure it was in gear and hand brake on
otherwise the engine will want to turn when the air is applied. Be
careful with your hands getting caught in belts or what ever if it
does!!!
        For an adapter I used a piece that came with my cylinder
compression tester gauge. One end screwed right into the spark plug hole
and the other end fastened to the air hose line. I hit it with max
pressure (100+psi) and had to wait a few minutes to see a rise in the
coolant pressure. I have a small gauge permanently installed in the
engine compartment for trouble shooting. I guess this speaks of WBX
confidence. ;-/

Good Luck and Drive Safely
Ken Lewis
86 Crewcab, 60 356 T-5
http://Neksiwel.20m.com/

On Mon, 7 Oct 2002 17:12:34 -0700 kevin obrien <kevindobrien@YAHOO.COM>
writes:
> Hello all:
>
> Continuing my epic overheating battle in my 2.1L
> (suspecting a head leak)....
>
> I built a little gizmo to pump air into the spark plug
> holes ( A Shrader Bicycle valve fitted to the threads
> of a hollowed-out spark plug) My plan is to pump about
> 60psi into each chamber (this procedure recommended by
> a listee) and watch the Expansion Tank to see if it
> bubbles. Ken Lewis also insisted the cylinder be at
> TDC to do this.
>
> Does this sound like I'm doing it right?  Please email
> advice if I'm missing something.
>
> Also...how do I establish TDC???
>
> Thanks!
> kevindobrien@yahoo.com
>
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