Piper Dakota Maintenance Manual page 298

CHART 2801. TROUBLESHOOTING (FUEL SYSTEM) (cont)
TROUBLE
No fuel pressure indication.
(cont)
Pressure low or pressure
surges
Unidentified leak.
Fuel valve leaks.
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
CAUSE
Defective gauge.
Failure of fuel selector to be
in proper position.
Obstruction in inlet side of
pump.
Faulty bypass valve.
Faulty diaphragm.
Fuel line damaged or im-
properly installed.
Worn O-rings.
2A22
REMEDY
Replace gauge.
Check position of selector and
adjust if required.
Trace lines and locate ob-
struction.
Replace.
Replace or rebuild pump.
Locate and repair or tighten.
Replace O-rings or valve.
28 - 02 - 00
Page - 28-04
Reissued: August 1, 1986