2002 660 Grizzly she ain’t breathen right

So I was driving the quad and suddenly it lost power just as I started to gun it. The sounds is like it’s running on a half a cylinder or like a plug is bad. Has no power when pressing the gas but idles perfectly. Changed spark plug air filter cleaned carb and replaced with all new parts all fuel lines look good. There’s no knocking or strange noises coming from cylinder. Any other ideas?

2002 660 Grizzly she ain’t breathen right

So I was driving the quad and suddenly it lost power just as I started to gun it. The sounds is like it’s running on a half a cylinder or like a plug is bad. Has no power when pressing the gas but idles perfectly. Changed spark plug air filter cleaned carb and replaced with all new parts all fuel lines look good. There’s no knocking or strange noises coming from cylinder. Any other ideas?