PROPANE torch unlit on full go around all joints some spray I believe carb cleaner but wait to verify that first !!!! I went for a ride last sunday half way my bike ran like **** came home pea shoot and shot gun and when I drained bowls 2 and 4 had **** in them didn't need to let sit plain as day crap probably rust !! or maybe fuel lines cake with crap ..Been running seafoam on a regular base now maybe loosen more **** up..