I have a Mule 610 that only has 22 hrs, I took it to a dealer to get it serviced...they said I needed a fuel pump,as well....When you first start it,and let it idle for about 15 minutes to warm up its just fine... but when you start heading out and push the pedal it starts smoking white....after you shut it down and restart it it doesn't smoke until you move out and start pushing the pedal??? Do think it may be a broken oil ring?...it takes a while to heat up before it starts the white stuff??? Help!