china made atv was running great- now I have some problems could you help?

okay we purchased a 150 speedster??? For my daughter, It is automatic with reverse. Electric start. It is a very nice atv for under 1000.00! For an 11 year old any ways, Well The question is she was riding it and it acts like it is jumping- missing something when you try to accelerate. It doesnt do it when the rear wheels are lifted up and no one is on it! It jerks thengoes then jerks, what in the world could this be any help would be awesome! thanks!

how old is it? it sounds like your carb needs a good cleaning

Could be the chain is slipping. Also check all your connections, mine has a little coil toward the front on the right that will bounce around and make it cut out. Fixed it with a tie strap.

I agree with the suggestions above... However, I would take it back to the dealer & have him trouble shoot it. The dealer may have not set something properly. These things are nice quads, but a few adjustments need done on them from "new" and a few minor parts changed out (ie. spark plugs & such....)

Many of these 150's don't have a chain tensioner on them - or not a good one anyway. So, you might want to put a good "spring" tensioner on it...

Happy riding!