What should the compression be on a 1994 40 hp Merc???JIM
J James46 Cadet Joined Aug 20, 2002 Messages 26 Sep 19, 2002 #1 What should the compression be on a 1994 40 hp Merc???JIM
O ob Admiral Joined Aug 16, 2002 Messages 6,992 Sep 19, 2002 #2 Re: compression ratio Depending on hours and wear 110 to 120.Anything below 100 needs attention.
