Fuel Problem on 2001 Johnson 90 hp

[svillebrian]

I have a 2001 90 hp Johnson. Having a fuel problem. Not getting any fuel unless I pump the primer bulb. The motor runs good until the fuel runs out. Pump the bulb, and it starts up again, and does the same thing. I just rebuilt the VRO pump and still having the same problem. I want to check to make sure I dont have a short going to the pump itself before I replace the pump. I have a four wire connection to the pump. Do you possibly know which wires to check to see if I am getting power and where the go to so I can check continuity in the wires to make sure I dont have a short. Any help quickly would be appreciated.

Thanks, Brian

 

[JB]

Re: Fuel Problem on 2001 Johnson 90 hp

Look for causes other than the pump, Brian. Those wires do not provide power, they are sensors.

Take the fuel line loose from a carb, put it in a bottle and turn her over. Are you getting spurts of fuel into the bottle? No? Try pumping the primer bulb. Got spurts now? Okay, you may have a restriction somewhere that the pump cannot overcome but the primer can or you may have an air leak in the line or a connector.

Other possibilities are a restricted vent in the tank, fuel pickup in the tank, antisiphon valve (if it has one).

Let us know what you find, and good luck.