Piper Comanche PA-24 Service Manual page 449

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PipeR COMANCHe seRVice MANUAL
Trouble
Failure of _,.me
10
develop fuU power.
Rough running ellJiae.
Low oil pressure.
TABLE VlFID. TROUBLESHOOTING OIART
(ENGINE) (cont)
c....
Throttle lever OUt of
adjustma".
Leak in induction
systeIII.
RcsaioUon in cuburetOr
air scoop.
Improper fuel.
Prope\lcr JOvcmor PUt OUI
of adjustment.
Faulty ipition.
Cracked engine mounD.
Unbalanced propeller.
Bcal propeller bladcs.
Defeotive mounting.
Lead deposit on spark
plug .
. \\alfunotioning engine.
I
nsuffiClent oil.
Dirty oil screens.
Defect;ve pressure PIle.
Air lock or dirt in relief
valve.
leak in suc:tlon line or
pressure line.
High olllemperarure.
Slopp",e in oil pump intake
passage.
Worn or scored bearings.
2 823
Remedy
AdjUSt Ihronle !eYer.
TiBbml
all
conneotions, and
replace defectift parts.
Examine air scoop and reo
move restriction.
Fill tank
with
recommended
fuel.
Adj_ JOYcmor.
Tipren
all
connections.
Check sy>tem. Check ignition
riming.
Repair or repalcc engine mount.
Remove propeller and have it
checked for balaace.
Check propeUct for ttack.
InsWI new mounltng bushings
Clean or replace plugs.
Check entire engine.
Check oil supply
.
Remove and clean oil screens.
Replace g",e.
Remove a.nd clean oil pressure
relicf valve.
Check gasket between accessory
hous"'g crankcase.
Sec ··High Oil Temperarure··
in Trouble Column.
Check line for obstruction.
Check sumon screen.
Overhaul.
POWER PLANT
ISSUED: 8/18172