Technical data

13773-001
28-00
Page 2 30 Nov 2000
Fuel starvation after start up Partial fuel flow from preceding
causes
Malfunction of engine-driven fuel
pump or fuel system
Fuel vents plugged
Water in fuel
See remedies from above
Replace pump
Remove obstruction
Remove water
No fuel output indicated from fuel
flow gage when auxiliary pump is
operated
NOTE: If the auxiliary pump is
turned on when the engine is off,
the fuel flow gage will show a
momentary fuel flow.
Mixture control set in lean position
and throttle lever is pulled back
Fuel line disconnected before fuel
flow sensor
Defective fuel pump switch
Open or defective circuit breaker
Loose connections or open circuit
Defective electric fuel pump
Defective engine-driven fuel pump
bypass or defective fuel system
Adjust mixture control richer and
move throttle lever forward.
Disconnect fuel line after fuel flow
sensor
Replace switch
Reset or replace circuit breaker
Tighten connections/Repair wire
Replace pump
Replace pump/troubleshoot fuel
system
Erratic fuel quantity indicator read-
ings
Defective fuel quantity indicator
Loose ground
Defective fuel sensor
Replace indicator
Repair ground
Replace fuel sensor
Fuel quantity indicator indicates
inaccurate fuel level
Fuel system indicator calibration
Defective fuel quantity indicator or
sensor
Calibrate indicator
Replace indicator or sensor
Sticky fuel quantity indicator
pointer
Defective fuel quantity indicator Replace indicator
No fuel quantity indication Fuel tanks empty
Left or right fuel tank circuit
breaker open or defective
Loose connections or open circuit
Defective fuel quantity indicator or
sensor
Fill with approved fuel
Reset or replace circuit breaker
Tighten connections/Repair wire
Replace indicator or sensor
Fluctuating fuel flow indications Fuel flow indicator/transducer
Vapor in fuel lines
Replace fuel flow indicator/trans-
ducer
Turn on Auxiliary Fuel Pump
Fuel leaks from electric fuel pump
drain manifold fitting
Faulty internal fuel pump seal Replace electric fuel pump
Trouble Probable Cause Remedy