Excalibur 330 Fuel System Troubleshooting & Info

[xlwater01]

Just to note the troubleshooting steps in the OP's post can be applied to the 1996-2002 GT40 engines as well. Those have an almost identical fuel system layout as compared with the Excalibur. The fuel pump relays are located on the rear of the engine on the GT40.

[jstallings]

To close the loop on anyone following my previous post on this thread, my issues which I would have sworn where fuel related ended up being fixed by new rotor cap and plugs. I was only getting about 60% of power when under a load, so assumed it was starved of fuel. Thanks for feed back though

[bionaraq]

Thanks for this post!. Will look for the upgraded connector on the FCC and since my low pressure pump is whining I'll order one. Anyone have the part number for it?

[nparker8697]

Further to the original post. When key is on neither fuel pumps engage. I have checked fuses and relays, all looks good. When I jump the fuel pump relay both fuel pumps will activate. However the engine will not start. It turns over but appears to to be getting a signal from the ecm. Fuel pressure at rail is 80+lbs. check engine light is on when key is on so I’m assuming ECM is working. I’ve checked all grounds for good contact. My next troubleshooting idea is to see if I have spark when turning over as I originally thought it was a fuel pump issue.

any other suggestions what could cause my fuel pumps not to turn on and engines not to fire?

[SashaHens]

Very Helpful, but my 2009 PCM Excalibur still won't start ☹️

I was just done skiing and suddenly engine died and when you crank it, it almost starts but after 1 or 2 seconds it dies again.

When I turn my key I hear fuel pump priming and when I press the valve where you can connect a gauge to measure fuel pressure fuel is spraying out with a lot pressure, so there is fuel. I also checked my spark plugs and they are giving a spark.

I know that after priming the pressure in the fuel system should remain, but this not the case, because when I press the valve after priming almost no fuel comes out. What could be causing this?

I also have my check engine light blinking, there is a mechanic coming with a computer to do a read out but this only by end of the week.

Thanks for the help

[SashaHens]

Further to the original post. When key is on neither fuel pumps engage. I have checked fuses and relays, all looks good. When I jump the fuel pump relay both fuel pumps will activate. However the engine will not start. It turns over but appears to to be getting a signal from the ecm. Fuel pressure at rail is 80+lbs. check engine light is on when key is on so I’m assuming ECM is working. I’ve checked all grounds for good contact. My next troubleshooting idea is to see if I have spark when turning over as I originally thought it was a fuel pump issue.

any other suggestions what could cause my fuel pumps not to turn on and engines not to fire?

Are you sure kill switch isn't broken?

[nparker8697]

I pulled the kill switch off and bench tested it. It works fine. Unless the wire running to engine compartment has been damaged it isn’t that.