"JaxDawg" wrote in message
ups.com...
Hello-
I recently purchased a used boat - 2002 Monterey with only 35 hrs on
it. Mercruiser 4.3
The compression numbers:
#1 130
#2 185
#3 180
#4 185
#5 180
#6 180

The mechanic who looked at it said that with so few hours on the boat,
its obvious that its sat for a while and that after use - the
compression in #1 would go up.
Should I be concerned? If so, what are the likely reasons for the low
compression in #1?

Thanks!

Rings or valve seats.

It *could* be a stuck valve, loose spark plug, leaking head gasket, or a
hole/defect in the piston, but those are unlikely.

I would guess it the rings...riding on some rust in the cylinder. I would go
ahead and run it, and see if it comes out.

Good luck.

--
-Netsock

"It's just about going fast...that's all..."
http://home.columbus.rr.com/ckg/