Piper PA-24 Comanche Service Manual page 483

•
•
•
PIPER COMANCHE SERVICE MANUAL
TABLE VlIC-II. TllOtTBLESHOOTtNG CHART
(cone.)
(ENGlNE·Tt1UOCHARGED)
Troubfc
c...
Remedy
Loss of. reduction of.
MalfuDetionq nwti·
Repair or replace
or fluctuation of
fold preuure
pup
puJe.
NOTE: If the
manifold pramre
due to faulty pup or
cnpne chances in
while rurboc:hU'lina.
possible oil in MAP power level or the air-
reference
line
or speed chanps. then
pte.
a.crual chan,e in MAP
occurred due to
one of the reasons
listed below:
TurbocharJer inlet
Check cluet:iDJ and re-
duct blocked.
move oblttUction.
Tutbocomprasor dis- Connect or replace
chute duet ruptured ducting.
or disconnected.
Severe rupture on ex·
Replace defective put.
haUSt
stacks
causiac
waste pte to be in·
d'fective.
TurbochatJcr rotor
Repla.ce TurbochllJer.
jammed.
Ruptured manifold
Repair leak.
pur: liDe or fimn,.
BrokeD waste pte
Replac:e contrOl cable.
conaol.
Loss or reduction of Out of fuel.
Refuel.
fuel pressure when
turbochuging.
Pa.rtia1 fuel vapor lock
Tum on boost pump
at
hilt!
altirucic due to and/or reduce power.
hot fuel and biJh power
setti.llp.
Ma.1func:tionm, fuel
Tum on bOOR pump
pressure rquJaUnI and/or reduce power.
valve or fuel pump.
Ruptured fuel line or Shut off fuel shut~ff
1eakint fittinl or
valw. full rich mixture
pump shaft seal.
until fuel forward of
firewall
is
consumed by
engine. Secure enll"e.
POWER PlA~T
ISSUED: 8/18/72
2
17