OMC 5.7 L Engine stalling at random in my 1992 Chris craft concept 22.7

[Cliffbay]

Boat runs great. Restarts 1st turn right away. Was stalling in between shifts and at slow speed. Today stalled at 30 mph after sputtering and then again while docking again at very slow speed. Anyone know what this is? I have recently started using gas station gas with 15% ethanol rather than marina fuel which apparently has no ethanol. Any chance this could have anything to do with it????

 

[fincastle]

Re: OMC 5.7 L Engine stalling at random in my 1992 Chris craft concept 22.7

Checked your fuel filters?

 

[bonzoscott]

Re: OMC 5.7 L Engine stalling at random in my 1992 Chris craft concept 22.7

Welcome to iboats! I personally don't think ethanol is a problem unless it was not winterized properly with stabilizer in the fuel. Start with basics, as Fincastle stated - filters. Not knowing your set up, fuel / water separator? Filter in your fuel pump? Should be a filter in the carb behind the fuel line entrance. Also check / clean your anti-siphon valve fitted to the tank. Try these things and if you still have problem, report back for further trouble shooting.