Bad fuel pump? Check this first!
I went riding to PA this weekend at my sisters farm. There are also many trails near her as well. She has a 400 Ranger that has been rock solid dependable now for 3 years. This weekend it started to act up as far as just backfire a few times then die while going down the trail. We traced it down to a fuel problem. Got the machine back to her place and I started working on it. The fuel pump was hot to the touch and would only pee out a small stream of fuel and build no pressure. I pulled the cap off the tank to make sure the vent tile was not plugged. Next I pulled the pick up line and checked the screen, no dirt. I thought for sure the fuel pump was bad.
What it turned out to be was the line from the fuel pick up tube to the pump. This line was just a tiny bit loose on the fuel pump side. You could spin it on the pump with the factory clamp on. It was by no means sloppy loose. Just able to spin. I cut off about a half inch of hose and put on a regular screw type clamp and it now runs like a top again. The fuel pump is quieter, and builds pressure. We took it for several more rides and no problems. I really thought that there was no way this line being only ever so slightly loose would cause a problem.
For those who think they have a bad pump, try this first, it might save you some dollars and grief!!
2011 500 EFI Ranger, Sage Green
Full metal cab, Soft doors, Glass tip out windshield, Windshield wiper, 60" Glacier plow, 42" Loader bucket, 1-1/2" Front spring spacers, 3500# Polaris winch, Benz silent rider exhaust, Rubber bed mat, Bluetooth speaker, MP3/GPS/Smartphone mount, 20,000 Btu cab heater, L.E.D. driving lights, L.E.D. dome light, Twin 27 Watt L.E.D. bed/back up lights, 35 Watt 5000K HID head lights, Running board style nerf bars. UTV pulled trailer, Hitch mount cargo carrier.