I have a 05 king cat 900 EFI. Original fuel pump lost pressure, down to 35 psi. Installed replacement Walboro pump, rode for about an hour, pulled over and shut down sled to wait for the wife to catch up. Sled wouldn't start. Tried powering up pump with 12V, didn't run. Installed second pump and rode for 3 hrs, same thing. After shutting down sled, it won't start. Pump won't run. Any one know of something that could be causing my problem.