Optimax Compression

[Jobu67]

Hello, I am going to look at a 2002 Merc Optimax 225 and was wondering what good compression numbers should be.
Thanks,
Joe

 

[jerryjerry05]

Re: Optimax Compression

The compression should be all about the same.Say about 110# on all 6.Each cylinder can be 5-10# different than the next. So if all are 110# and one is 75# There is trouble.Your tester might read different than mine.So you might get a different reading.A big variance will show trouble.J

 

[Jobu67]

Re: Optimax Compression

Thank you Jerry. I will be heading up at the end of April to check it out and will let you know what I find.
Joe