10-67. TROUBLESHOOTING.
TABLE X-X. FUEL PRESSURE GAUGE
Trouble
Cause
Remedy
No fuel pressure
Fuel valve stuck.
Check valve.
indication.
No fuel in tanks.
Check fuel, fill.
Defective fuel pump.
Check pump for pressure build-up.
Check diaphragm and relief valves
in engine pump. Check for obstruction
in electric pump. Check bypass valve.
Air leak in intake lines.
Defective gauge.
Replace gauge.
Pressure low or
Obstruction in inlet
Trace lines and locate
pressure surges.
side of pump.
obstruction.
Faulty bypass valve.
Replace.
Faulty diaphragm.
Replace or rebuild pump.
Needle fluctuation.
Surge dome or pump
Remove and empty.
filled with fuel.
Air in line.
Loosen line at gauge, turn on electric
pump. Purge line of air and retighten.
High fuel pressure
Fuel in line expanding
Normal.
with engine shut off
due to heat build up
right after flight.
in cowling.
10-68. REMOVAL AND REPLACEMENT. Refer to Paragraph 10-89 of this section.
THIS SPACE INTENTIONALLY LEFT BLANK
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY. 28, 1989
I N S T R U M E N T
2C7