Hi all<br />I have a 1988 Mariner 90 3cyl which gets serviced every year by agents and runs great but has one problem. Sometimes when throttling back to neutral after running at wot, the motor would smoke and stutter for a few seconds when going forward again. <br />A fuel filter with a glass cover is fitted on the motor side of the primer bulb and I also noticed that when the motor is switched off, two stroke oil must be leaking back into the fuel line because the color of the fuel in the glass filter changes to that of a premix (takes about 3-5 minutes). <br />The motor starts easily enough but I get the impression that there is always a "wrong" mixure which must be burnt first before I get full power and you will agree that a waiting skier does not appreciate that.<br />Weather is great. Leaving tomorrow for 6 days of skiing. <br />Any suggestions plse?<br />D