I just bought a boat with a 1991 oil injected 40 horse Johnson.<br />The boat is a fixxer upper the the motor runs good<br />but I'm wondering if there is way to make sure the oil injector is working. The exhaust has a blueish tint to it. When I bought it I had the guy let it idle for about 20 min. and no buzzers or horns came on. I did a search to make sure this topic wasn't covered a million times before and came up empty handed.<br />Any advice or ideals would be appreciated.<br /><br />Shane