I'm working on fixing a snowmobile that has been sitting in a barn for 8 years. The sled went in running but was never ran while in storage. Everything is in good condition (it had a cover and a roof) but fuel is not moving through the fuel lines. I'm not sure if this is clogged jets or if the fuel is stuck right at the tank. Any help would be good so I don't waste my time fixing something that's not broken. Thanks.