Neil,

I once had a cracked head which was leaking combustion gasses into the
coolant.  When doing a compression test, only the cylinder with the
cracked head wouldn't hold pressure on the gauge.

Mike

neil N wrote:
> Hi all.
>
> I bought a compression tester and tried it on my parts van 1.9 WBX
> engine. On two of the cylinders, the gauge would drop while still
> threaded in sparkplug hole.
>
> I was doing this w/o remote starter.
>
> The gauge should hold its' reading right? i.e. once it's pumped up, it
> should stay there correct?
>
> It was threaded properly, and adaptor to hose was threaded properly too.
>
> Apologies for such and elementary question!
>
> Neil.
>
>
> --
> Neil Nicholson. 1981 Air Cooled Westfalia -
> "Jaco"  (Bustorius)
>
> http://web.mac.com/tubaneil
>