An injector is about $12, and yes, that is a possibility. As this UTV had only 200 hrs, that's what I did first, and quickly found how wrong that knee-jerk solution was. If that new injector does not help, you might suggest that they pull out the chain tensioner to see if there is any tension on the chain. If not, that's the problem.... If so, hope there's a warranty in effect, as the engine has to come out for replacement.