hey guys, i'm hoping someone can help me out here..
so i picked up a boat in the spring.. due to my arm injury it has only seen the water once in early june (and i didnt even get a chance to drive it).. we noticed the motor sounded a little rough (and slow) on full throttle.. i figured i wouldnt worry about it until i was healed enough to use it again.. this friday i'm hoping to get it out for the day so today i start to get it ready..
i tested the compression on both cylinders (was good), changed the plugs and fired er up.. starts on the first pull.. it'll rev really low for a couple seconds and then, what i can only explain as a backfire, happens and the motor dies.. i ran carb cleaner through it and that seemed to help, if i give it a fraction of throttle it will run fine..
is this something i should be worried about? any ideas of whats happening with it? i'm not a mechanic by any means..
the motors a '89 25HP Yamaha 2 Stroke 25LF..
thanks guys
mike