Similar problem here, thinking its water in the tank. wondering what your guys symptoms are when this happens, like will it still idle but not run strong or just not start at all?
Here is what i changed, rebuilt carb from dealer, new fuel pump and filter, new water separator, new spark plugs, and new starter. it will start up everytime i take off and has power but as soon as i come off the throttle and hit it again it has very little power at all and i have to idle back to the dock.
Has anyone had issues like this, its an 89 tristar open bow with a 351. I am at a loss of where to try next?