Check the return spring on the oil pump. Mine had broken and the pump was wide open, I used a tank of oil to a tank of fuel (way to much). Pull the pump cover and operate the lever by hand and see if it returns by itself. Buddy
I know the "VOICES" aren't real but they have some great ideas.
1999 Sport 400 2x4
Complete rebuild w/Wiseco piston by Todd Kerby, Comet clutch, Swamplites front & rear, 03 Predator Rear Hubs,
ITP Pro Baja Wheels (4x156 front & rear), DG Front Bumper, Fuj Rear Grab Bars and RZR Belt