The problem is the fuel is not reaching the carburetor fast enough and is stalling however if i pump the primer it will run for a few seconds until the fuel in the bowl is gone and then shuts off. I recently adjusted the valves to stock .006 and had to take tank off and just put it back on to get it ready for a ride but it wont stay running whether idling or reving it. I had bought a new carburetor because for me it was easier to do that then take it out and rebuild it. i adjusted the carb. The old fuel line was brittle and broke at the nipple of the old carb so i figured why not replace everything (new petcock,fuel line, inline fuel filter) and put it all on but noticed fuel does not flow real well but if i take the fuel line off it flows good which leaves me to think the in line fuel filter is not allowing gravity to do its thing and pull the fuel into the carb. I've turned the fuel vent on and taken gas cap off and it didn't seem to help at all. i also recently put a small,small amount of sea-foam like chemical to clean out everything because prior to me obtaining the 4x4 it had old gas ran through it and i wanted to clean all the gunk that might have collected from running it during that time and it sitting for a year. I also put a new air filter in it and have not adjusted the carb for it yet but that shouldn't affect the fuel not reaching the carb. I am almost positive that the inline filter is the problem but wanted to see what everyone else thinks. I also noticed that the petcock nipple is a little smaller than stock but it should still be providing more than enough fuel.