Thanks everyone for their feedback. I tried the oil in the cylinder trick
and the compression only went up to 99. Sounds like the valves need a
look. Oh well, these kind of projects are fun!
Sally or Dick Taylor wrote:
> Jim---The low compression on one cylinder is either from a valve not
> seating on your #6, or the piston could have a broken ring land. The
> usual "test" of squirting a teaspoon of oil into this sparkplug hole may
> not work, as it would if there were only worn rings. Give it a try,
> anyhow. If the compression doesn't come up 20lb. or so, it's probably
> one of the valves on this cylinder. Be sure there's some lash here, as
> no lash = compression loss, as the valve isn't seating.
>
> It isn't normal for one cylinder to drop this much more than the others
> due to just general wear, tho the engine can appear to run fine this
> way.
>
> Dick T.
--
Jim Henningsen
email:jdhenn@cfl.rr.com
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