I noticed when taking my rzr of my trailer I was leaking coolant, or so I thought. My radiator was still full, expansion tank empty and didn’t see any signs of a leak in any of the lines. After checking around for a while I realized it was right under my eyes from the start but I had put the hood and underhood tray off to the side. Sure enough it looks like the coolant had built up so much pressure it shot straight up through the little pin hole at the top of the expansion tank. I never had any signs of overheating and my rzr ran perfect on the trip. I first noticed the coolant on the inside of my wheel well (dripped down the a arm) and then noticed the same spot on on another part of the wheel well which means it probably spewed a little coolant on another trip.

Is this normal for it to spit out the top of the expansion tank? My first thought was overheating, but thought if it got real bad I would have noticed something on the performance end. Could there be air in the cooling system and if so how do I bleed that? Could it be as easy as getting a better radiator cap? Another thing if I come to the end of a run and my fans are on, should I throw it in neutral and wait until the fans shut off to turn the Rzr off? Any help or suggestions would be much appreciated.