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I have a 2013 DF90A last year it started to have a problem with keeping the fuel going to the engine. The shop changed the fuel filter, hoses, and hand primer. It worked as long as I primed it every time I stopped, which it didn't do before. The second time I took it in they said they changed an anti siphon valve. It didn't change a thing. This year it ran for an hour after I primed it and then quit. Acted like it was out of fuel. I put ten gallons it, primed it and it started fine. After a minute or so it quit. Priming with the hand pump helped, but it wouldn't keep running. Acted like it was out of fuel. Any Ideas?
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There can be many reasons why fuel doesnt get to the motor. Most are nothing to do with the motor and are related to the boat and its fuel system.
When it stops, what is the primer bulb like? Sucked flat? If so you have a issue anywhere between the pickup in the tank and the bulb. Or with the vent not allowing air to come into the tank as fuel is used. So also Check your tank vent outlet, make sure mud wasps havent made a nest there and clogged it up. See if you can blow air into the tank thru the vent line with the filler cap off. Check for air leaks in all hose connections.
As far as the engine itself, if the bulb is still firm when the engine quits, it could be a LP fuel pump problem. Does the fuel pump run for a few seconds then stop when you turn the key to on where it beeps? Dealer should run a fuel pressure test to confirm the performance of the HP pump.
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