Turn key and it cranks up and then shuts right back off. Sometimes it would idle but as soon as I gave it throttle it would shut off.
So after changing the fuel Pump still doing same thing. I then bought a Fuel Pressure Tester & Fuel Injection Pump Tester from Harbor Freight for around $15 and was only getting about 3psi at the fuel injector test port. Because I’m a novice I didn’t check the tank at first so I pulled the fuel pump assembly back out and viewed the tank with a flashlight. It had the old fuel pump sock residue all in it. I took the tank and cleaned it out thoroughly. Put back together and same thing. I then went to Napa and purchased a MPF 3-19679 Fuel Pressure Regulator at $66.99. I replaced it and it was a perfect fit. No modifications needed. Turned the key and it fired right up. It runs like a champ now.
All I needed to do in the first place was completely clean out the tank, replace the Fuel Pressure Regulator(Napa MPF 3-19679) and put a new Strainer(Napa AFP FS111) on the Fuel Pump(Napa APF E8198).
A special thanks to AKStew for the very informative piece that he did on the fuel tank and servicing the Fuel Pump.
I am very happy to have my 800 running and now I will follow this exact procedure on my 2007 Sportsman 700EFI because it is doing the same thing.
