Yo dude same thing happened to me. Did u ever take off the oil injection tube froom the oil tank cause thats what i did and now i gotta rebuild the bottom end which is gonna cost me about 425.00 for just parts alone!!!! Now i cant ride so i painted my frame metalillc red and a arms, swingarm, grab bar, new skid plates!!!! black and bumper silver yo its gonna be nasty lookin when i get it workin again! Send me a pm if you guys have any suggestions for me like how and where to buy cheap rebuild parts like a piston or crankshaft assembly cause i do not have the kind of monay its gonna take to rebuild this thing. Thanks yall