I have a arctic cat 300 2wd that wont crank motor turns over,has spark,and is getting gas the story is i was riding and parked it and went back 1 hour later and it wouldnt start so i sprayed starting fluid in the carb and still wouldnt crank so i left it sitting 2 months and when i went back it cranked up and ran good then it acted weak so i parked and it wont crank again can anyone help thanks anything will help