Hello everyone,

I am new to the forum. I own a 2008 Sportsman 500 HO EFI. About 4 weeks ago I was having issues starting my machine so I had the battery tested. The battery was bad so I had it replaced.

Tonight while putting my new battery in I started my machine, it would fire up but stall and back fire. I could hold the throttle down and this would keep it from stalling for a bit however eventually every time it would eventually loose power.

Any ideas on what could have caused this? I am planning on draining the fuel tomorrow in case I have water in my tank and maybe adding Seafoam.