www.iFourWinns.com

My boat seems to want to start missing and stall if I run 5mph for a long period of time. It also happend the other night when I was PATIENTLY waiting for the wife to back the truck down the ramp. (took a while). Does anyone have any ideas? I just had it serviced.

Thanks for the help guys....

Tony

What kind of service was just done?

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Mike
2005 Four Winns 230/240
VP 5.7GXi/DP
1998 F-150 XLT
Boat Pic

The normal- Oil, filter, water/fuel seperater, fuel filter, supposibly cap and wires.

The boat only has 71 hrs total on it. It has the 5.0 270hp fuel injected motor in it if that helps. Other than the random stalling after going slow for a 10-20min period of time, the boat runs great..

Possibly fuel vapor lock? Try running the blower during any low speed/idling and see if the fresh air in the engine compartment helps.

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Terry
Current: 07 Crownline 255 CCR cuddy - 350 Mag MPI/B3 "Casi Cielo"

Previous:97 245 Sundowner 5.7GI/SX

Tow vehicle: 1986 GMC 2500 Camper Special 454/TH400

I would agree with the vapor lock theory. I've had occasional stalling issues with my 5.0 carbureted motor (also 2002). Seems to happen if I've been cruising for a while and then stop and sit for a few hours in the sun (fuel evaporation in the carb bowl or fuel line??). Scares the heck out of us, because the engine will start, and we'll take off and a minute later it stalls and takes a little convincing to get started again. Also could be fuel quality. I agree with the patient / blower method.

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I had your same boat for years and could idle all day long with problems. It sure does sound like a fuel problem, or perhaps a vacuum hose leaking causing it to falter at idle.......(How old are the plugs? REALLY bad plugs might cause it to sputter at idle)

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2011 Four Winns H260 Frenzy $ea Note
VP 8.1GXi/DP EVC 420HP
2007 Silverado 1500 CrewCab 4x4
Previous:
2002 Four Winns H200
5.0GXI 270HP

That's for the replies. I am going to replace plugs and any vacuum lines tomorrow. I will know on Saturday how it goes. Thanks again.

Good luck on getting to the bottom of this problem.

Not sure if the problem is gone but I went out this sat and never had the problem. I did run the blower whenever I idled or ran the boat slow.
Thanks for helping everyone.

Is there anything I can do the eliminate the vapor lock issue? Other than running the blower?

Thanks again everyone!