injector

Hello all, My son's 2017 110 EFI started to become harder and harder to start. Once started seems to run fine for the most part. It seems to be flooding out at start up as you can smell gas heavily at the exhaust. Would a dirty injector cause this issue if it were stuck open? Has good spark...

Since my last big ride my sportsman had sat up a while and a couple of weeks ago I broke it out and did a little riding. I noticed that it would smoke a little until it got heated up. Then even once heated it would smoke when sitting idle. Never rode much more than an hour or 2 here and there...