Rode my ATV yesterday no problems. Today I go to start it up and it has a hard time starting. When it does start I have to hold throttle all the way down and then it runs at low RPMs. Stumped by this one. Would sure appreciate any help I can get.

 

Change the plug first, "just in case" but it seems like a partly blocked carb. I would take it apart, blow jets and passages out and see if that cures it.