Zenair CH2000 - Fuel System Troubleshooting

ZENAIR CH2000 SERVICE MANUAL
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FUEL SYSTEM TROUBLESHOOTING
Trouble
Cause
Remedy
Fuel gauge fails to indicate
Broken wiring
Gauge not operating
Float partially or
completely filled with fuel
Float touching tank
Circuit breaker out
Check and repair
Replace
Replace float
Bend float arm
Reset and check
Fuel gauge indicates full
when tanks are not full
Incomplete ground
Check ground connections
at fuel transmitter
No fuel pressure
indication
Fuel valve stuck
No fuel in tanks
Defective fuel pump
Defective gauge
Check valve
Check fuel, fill
Check pump for pressure
buildup. Check diaphragm
and relief valves in engine
pump. Check for
obstruction
Air leak in intake lines
Replace gauge
Pressure low or pressure
surges
Obstruction in inlet side of
pump
Faulty diaphragm
Trace lines and locate
obstruction
Replace or rebuild pump
Unidentified leak
Fuel valve leaks
Fuel lines damaged or
improperly installed
Worn parts
Locate and repair or
tighten
Replace valve
Nov 02 8.3