My 2013 850 XP is having a fuel problem. It smells like there is a fuel leak but I stripped the plastic off and checked after ridding for a leak but no such luck. Still could smell fuel but there is no leak. Seems to be comming through the exhaust but the plugs are a little lean, almost a hint of white. But the exhaust tips are tan brown not the normal black. I’m stumped. Any help would be great. Thanks.