At times when I start my raptor it idles fine, but when you give it gas it acts like not getting any. It will sit there and spit and miss. Something new today, going up a steap hill at the top it started missing and spitting and due to trying to climb it kills the engine.....HELP.....

 

OK, this sounds like what happend to my wolverine. since it is a 4-Stroke a LEAN carb setting can cause it is run like crust.