|Electrical or Manual Fuel Shutoff Not Closing||Verify solenoid is not being energized|
by a short in the wiring. Check the linkage in the shutoff lever for binding. Check the
ability of the spring in the pump
to pull the lever to the shutoff position.
|Engine Running on Fumes Drawn into Air Intake.||Locate and isolate the source of fumes.|
|Fuel Leaking to Intake Manifold.||Check for porosity between the fuel filter mounting to the intake manifold.|