challenger 2000 merc 240 efi no fuel coming from tank.

[geoffc]

Hi All,
MY seadoo has been running fine for a couple of months with alot of help from Tim 75. I put in today boat ran fine for 15 minutes then stopped. I had just filled up with new gas. I took the boat back home and started trouble shooting the problem. Vst was empty when I took the drain plug out. Pump is humming and vibrating. I went to the lift pump when activated it is clicking. Took the hose off the lift pump and the pump is pumping air but no fuel coming through. I took off the hose going to the filter on the other side no fuel coming from there. It seems like it is vapor locked some how. The vent is clear I blew some air in and you can see the bubbles in the tank. is there something inside the tank that would completely stop fuel flow?

 

[Dr Honda]

Nothing should stop the flow on that tank... unless you dropped a baggy down the fill neck. But more likely that you have a small leak in a clamp, or a split hose. That will keep fuel from being drawn up.

 

[geoffc]

The lift pump is pushing air but no fuel I will check the lines for a crack

 

[RHCote]

Did you try emptying the water separator filter? Sounds like the cause to me. Saved my boating day two weeks ago after filling up. Easy fix! Good luck!

 

[Tim75]

The lift pump is pushing air but no fuel I will check the lines for a crack

Check the lift pump itself. There are check valves in it that can fail. Have you checked the filter on the lift pump? Spray some WD-40 into the intake of the pump. Put a hose from pump intake into a small container of gas. Put another hose from discharge side back into the container. Turn on the pump. Normally, the lift pump only runs a few seconds.
No flow? Bad pump.
Flow? tank obstruction or air leak.

Replacement pumps can be gotten from Rock Auto. Low pressure (6psi) MARINE fuel pump. About $40, instead of $160 from Merc.