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I have a Bennche 700 EFI Bighorn. I’ve recently been unable to get it to start. After a little troubleshooting I realized my fuel pump was not pumping fuel. This weekend I emptied the gas and replaced it with new. I replaced the fuel pump, fuel filter and fuel injector. I also replaced the battery, spark plug and made sure all my fuses and relays were good. I have confirmed that the float on the fuel pump is not obstructed. The UTV is about 12 years old and has less than 100 hours on it. It has not run in over a year. Not sure whats going on?!? After doing a little reading I'm leaning towards it being an issue with the ECU or perhaps a faulty wire in the wiring harness. Anyone have any ideas on where to start looking or what I could be dealing with? Any help is appreciated, thanks in advance!

I drove the mule one day and drove fine, I parked it and went to start it the next day, it would start and run fine for about 5 seconds and then die, I did see the fuel pump was flooding , I ordered a new one ,does any body know if this will fix the problem also I need pic of where the lines go from fuel pump , forgot to take a pic when I took it off its a Kawasaki mule 2007 610 4x4 thanks for any help