Piper PA-24 Comanche Service Manual page 330

"PER COMANCHE SERVICE MANUAL
TAILE VII-ID.TROUBLESHOOTINC CHAllT
(ENGINE)
(CODe)
Trouble
c:.ua..
Ilem.dy
faiiure of engine to idle
lacottCct carburetor idle Adjust duoft1c
ROp
to
properly.
adjusanat.
obaiD
correct
idle.
Idlc mixture. AdjUSt nWauR. Refer to
ezIIUlc lIWlufaeturcr's hand·
book
for proper procedure.
Leak intbe iDduetion
syftaft.
Tiptea all coDDecUons in the
iDd"aiora syscan.lleplace
any para that are defectivc.
Low
cylinder
compression. Check cyliDder compression.
faulty ipition systan. Check
marc
ipition system.
OpeD
primer. Lock primer.
Improper
spark
plul
tcttiDI
Check
spark
plul pp.
for
altitude.
Dirty air fUm-. Clan. refer to Patqn.ph 1·25.
Low power and uneven
Mixture too
ricb; indicucd
Check primer. Readjustment of
runniJII engine.
I)y
slugisb
capac
CU'bWftOr by authomed
operation. red exhaUII:
personnel iDdicaEed.
fi&alC
and black smoke.
Mixture tOO laD; indicued Check fuellincs for dirt or
by ovcrl1_tiq or back.· oEber restrictions. Check
tiline· fuel supply.
Leaks in induction system. TiPten
aU
cOMcctions. Re-
place defcctift' patts.
Defectiw
spark
plup. Clean or replace
spark
plug.
Improper pde of fuel. FUI tank with recommended
arade.
Mapeto breaker pOints not Clean points.
wotkinC prupcrly. Check intcmal
tim.ina
of
rnqncto.
Defcetive ipition wite. Cheek wire with electric
teSter. Replace defective
wire.
Dcfec:tive
spark
plul
Replace connectors on spark
tcnniDal conacctors. plulwire.
Restriction in cxhaUSt Check for loose muffler baffles.
system.
Improper ip'lition timing.
C!leek mqnetos for uiming and
synchronization.
POWER PLANT
ISSU ED: 8/18/72
2 822
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