Hey I am new to this forum. I have been on here a couple times but never signed up until today. I have searched some about my fourwheeler but havent really found what I need. I have a 1997 polaris xplorer 500 4x4. I just got it on trade. It is not currently running right. It seems to idle decent and can rev up a little but then bogs out and backfires. The rubber boot from the airbox to the carburetor was ripped and had a hole so i ordered a new one. Also the airbox studs are broke so lid just sits on top. I was told that if i got a new airbox and tightned down the lid and fixed the rubber intake hose it should run right. The guy said that they need a lot of vacuum for diaphram to work. I cleaned the carb and changed fuel filter and put new gas in drained out old. Could this be what is wrong with my quad.