Mid 90's 70hp

KellyC

Senior Chief Petty Officer
Joined
Aug 24, 2010
Messages
733
I am going to go look at a boat that has a 70hp Force on her. I was wondering what the compression should be on a motor like that? The owner says it runs good, but I don't really trust anyone any more for telling the truth about selling a boat. I want to do a compression check when I go and check it out and also hear it run. Any thing else I should look out for as far as this motor goes? Thanks
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,755
Re: Mid 90's 70hp

Comp should be in the 135-150 # range.

gear oil for water and or metal shavings

Spark on all 3 plugs.

Sea trial to see how she runs and will satisfy your needs.
 
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