Piper Lance II - Troubleshooting

LANCE
II SERVICE
MANUAL
10-57.
TROUBLESHOOTING.
TABLE X-XI. FUEL
PRESSURE GAUGE
(PA-32RT-300)
Trouble
Cause
Remedy
No fuel
pressure
indication.
Fuel
valve
stuck.
Check
valve.
No fuel
in tanks.
Defective
fuel
pump.
Defective
gauge.
Check
fuel,
fill.
Check
pump
for
pres-
sure build-up.
Check
diaphragm
and
relief
valves
in engine
pump.
Check
for
obstruction
in electric
pump.
Check
bypass
valve.
Air
leak in
intake
lines.
Replace
gauge.
Pressure
low
or
pressure
surges.
Obstruction
in
inlet
side of
pump.
Trace
lines and
locate
obstruction.
Faulty
bypass
valve.
Replace.
Faulty
diaphragm.
Needle
fluctuation.
Air in line.
Replace
or
rebuild
pump.
Loosen
line
at gauge,
turn
on
electric
pump.
Purge
line
of
air
and
retighten.
High fuel pressure
with
engine shut
off
right
after
flight.
Issued: 1/3/78
Fuel
in line
expanding
due
to heat
build
up
in
cowling.
Normal.
INSTRUMENTS
2F2