What causes gas to leak out the exhaust on 1998 ski-doo formula z snowmobile?

Gas leaking from the exhaust on a 1998 Ski-Doo Formula Z snowmobile can be caused by several factors, including a faulty carburetor that is allowing excess fuel to flow into the combustion chamber, leading to unburned fuel being expelled through the exhaust. Another possible cause is a malfunctioning fuel line or a worn seal that allows fuel to escape before it reaches the engine. Additionally, a clogged exhaust system could create back pressure, causing fuel to leak out as well. Regular maintenance and inspection can help identify and resolve these issues.