It worked before I changed to my V-mount. Now it doesn't. Might the relay have just gone bad? I haven't really changed any wiring that I can think of. It turns over and I have spark just no fuel. It's a walbro 255hp. They are very loud and should be audible when I turn the key, but no dice. Any help is appreciated. Thanks.

 

Maybe your ENGINE fuse is blown OR you forgot to reconnect the Fuel Pump Resistor Relay just behind the right front headlight assy.

 

I reconnected the relay and relocated it to the frame rail. My intake makes it so that it cannot mount where it was originally intended. The fuse I just replaced, but could have failed again. I'm going to be in the garage all night painting so when I catch a break I'll check it.

 

I still can't figure out what's going on with this pump. Everything else works but it. The Relay does NOT click when you turn the key to on. Would it be possible to just run a wire straight from my battery with a toggle switch in-line, without messing anything else up? I can't find which pins on any of the connectors to test for power. I've checked the FSM and I'm sure I'm just overlooking it, but can't find it in there either.

 

Dont do that!

 

any clue what pins to test for power? both at the fuel pump relay and at the pump.

 

any Ideas? I've checked all of my wiring and grounds, still nothing.

 

replace the pump.

 

its brand new. literally 10 seconds of run time on it. The relay does not click. it should. would the relay under the dash have anything to do with it?

 

bump.

 

The Circuit Opening Relay above the steering wheel column powers the fuel pump.

The ENGINE fuse powers the Circuit Opening Relay.

The Fuel Pump Resistor relay passes the power on from the Circuit Opening Relay to the fuel pump.

Jumper the fuel pump check connector and put the key ON. The pump should work. The Circuit opening relay should click when the fuel pump check connector is jumpered (if the key is already to ON).

If the Circuit Opening Relay does click, then pull the round plug off the Fuel Pump relay/resistor assy and see if there is power on the Blue/Red wires of the plug. It comes from the Circuit Opening Relay IF that relay is pulling in.

IF power is not coming from the Circuit Opening Relay to the Fuel Pump resistor/relay, then Pull the plug off the Circuit Opening Relay and see if there is power on the B/W wire in the relays plug. It should be there. IT comes from the ENGINE fuse. ENGINE FUSE ENGINE FUSE ENGINE FUSE ENGINE FUSE ENGINE FUSE ENGINE FUSE ENGINE FUSE.

If no power is on the B/W wire, check the ENGINE FUSE. If the fuse is good then find out why the IGNITON SWITCH is not feeding the ENGINE FUSE.

Series four and series five wiring diagrams are online and free for a download.