I just brought a boat that has a 2001 mercury<br />90/65 jet motor with a 8 hp Yamaha kicker. The<br />mercury injects its own oil, but the yamaha is a <br />premix. The old owner just premixed ALL gas at<br />a 100 to 1 in the tank, and let the mercury<br />inject its oil to this mixture. <br...
On a 1992 mercury 115 with 2x2 carb system, <br />compression is 125# in 2 cyls. and 108# in other<br />2 cyls.( told this by seller ) Is it possible<br />that the 2 cyls. that run below 1800 are just<br />gummed up? Is this compression out of line? How<br />is best way to run my own tests? I...
