Fuel fumes and poor performance

[Volphin]

Hi guys, my Dad's old boat has developed a serious issue that hopefully you guys can help with...
It's a 1986 Winner ZZ 880 with Mercury 115 (serial not handy at the moment). The engine runs very badly like it is running out of fuel. But you can smell fuel in the bilge big time around the oil injection reservoir. Also, the priming bulb won't get firm. My guess is a fuel line is loose spilling the fuel. As of now, the hatch is open and airing out before I go poking my head in there. I have never worked with an oil injection system and don't know where to start other than finding a way to unmount it and look for loose connections or split hoses. Does anyone have a diagram?

 

[tpenfield]

Check the fuel line coming from the tank for leaks. It sounds like the bulb is pumping air (from a crack in the fuel line) and then the fuel is leaking back into the bilge. It may not have much to with the oil injection system.

 

[flyingscott]

If your motor has the autoblend system you need to get rid of it.

 

[jimmbo]

Loose or damaged hose, hose clamps, fittings.
As for the Auto Blend Oil mixer, remove it from the fuel line, drain the oil from it, then throw it as far as you can, preferably over a cliff. Run premix at 50:1, the engine will live a more secure life

 

[Volphin]

Thanks for the help guys. I removed the auto blend system and mixed the oil with the gas 50:1. It runs like a raped ape now.