Boat Died

[Topdwg]

Good evening all. So have a new to me 1999 Moomba Outback LS with the Indmar 5.7 Holley carb. Took it out for the first time and it ran great for a few hour and then just loss power and died. Sat in the water for about an hour and it fired up. Took back to the dock and went home. Got up today and tinkered in the carb. Was running fine so we decided to take out.

Once again was running great and then same thing, just died. To make a long story short made it home and I disconnect the fuel line coming from the electric fuel pump leading to the carb. Had my son blip the ignition a few times and nothing is coming out?

Is there anything aside from a fuel line and pump that could be bad or should I just change out this $70 fuel pump?

 

[achris]

Check anti-syphon valve, fuel filter, and tank vent line. Also check voltage at the pump, and if it's not there, check the oil pressure switch (switch, not gauge sender )

Chris.........

 

[Topdwg]

Ok thanks, but my oil pressure gauge is working?

 

[Scott Danforth]

A plugged fuel vent would cause the symptoms you mention

 

[Topdwg]

Could I take the fuel cap off and see if it’ll start pumping fuel? I disconnected the fuel line from the pump to the carb and it’s not pumping fuel.

 

[achris]

Could I take the fuel cap off and see if it’ll start pumping fuel? I disconnected the fuel line from the pump to the carb and it’s not pumping fuel.

That's why I suggested anti-syphon valve and fuel filter.

 

[Topdwg]

So I took the vent tube off and blew through it. Wasn’t restricted at all. Took off the anti siphon valve and blew in it. Seemed hard to blow through so I went and bought another one. Just installed, and still no fuel coming out of the fuel filter to the carb. New filter has been out on. So I’m thinking either the pump or oil pressure switch, but when I crank over I see on the gauge the needle moving up to about 5 pounds?

 

[achris]

The oil pressure switch that powers the fuel pump and the oil pressure SENDER are completely different and isolated units. Just because you see oil pressure on the gauge doesn't mean the oil pressure SWITCH is closing, or that the terminals aren't corroded.

Chris....