CarTalk.com Blogs Car Info Our Show Deals Mechanics Files Vehicle Donation

Boat question

I have a 1990 omc cobra 4-cyl 3.0 i/o motor. It runs great for 5 minutes then it sputters. I changed the plugs and the fuel filter.

How old is the fuel?

Check for water in the fuel.

the addition of ethanol to gasoline is causing problems in marine engines…check out web sites re: problem with ethanol gasoline