"JimH" wrote in message
...

"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!


Yep, but I would have questioned it before I bought it.

A 3+ year old boat with only 35 hours on it? Hmmm.

That is not that unreasonable, if someone bought it at the end of the
model year, and then found they jst didn't use it.....in a northern climate,
I can see how it would have low hours.


Why would sitting idle cause it to lose compression in only one cylinder?