the pointy end is the bow
Join Date: Aug 2006
Location: La Conner, Washington
Thanked 27 Times in 26 Posts
Rep Power: 11
It sounds like your husband has covered the main faults. As well as taking Minnewaska's advice on checking an auto shutoff, I'd still be looking at the fuel system. I would run it off a separate container of fuel to troubleshoot it further. I've seen this symptom a few times on highway trucks, a motor running for just a short interval when there was some sort of a restriction between the motor and the tank. The motor starts up and runs, the restriction causes fuel starvation, the motor quits. When the motor quits and you go to start it again, the fuel pump delivers just enough fuel to get it started again before it starves out again. I used to pour some clean fuel in a coffee can or something and run the motor off that to see if the problem goes away. It could be anything like a degrading hose between the motor and tank or something funky going on at the fuel pickup in the tank. If it runs off your alternate fuel source, you'll know the problem is between the tank and where ever you plumbed the alternate fuel source into.
1983 Fraser 41
La Conner, WA
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Boating for over 25 years, some of them successfully.