I just purchased a 1999 merc 150 EFI<br />Ive noticed at low speed 3-10 mph it seems to be missing a beat and not running smooth as it should<br />Im not sure what to expect.<br />Does anyone have this problem or is it normal? <br />Do the things get tempermental when they are not running at high speeds for a period of time.<br />It almost feels like its not running on all 6 cylinders and that I may have fouled out a plug or two.<br />I would appreciate any feed back<br />Thanks
