under certaain conditions, the hose clamps on the fuel tank filler pipe and fuel tank filler vent pipe could fracture. the fracture of these clamps could cause fuel leakage at any of the four pipe to hose connections. leakage can occur during refueling, or while driving, if the fuel tank is above 3/4 full.
under certain vehicle operating conditions, the governor weight retainer in the injection pump may fail. the throttle valve could stick, preventing return to idle and shut down of the engine by the driver.