Piper PA-24 Comanche Service Manual page 478

PIPER COMANCHE SERVICE MANUAL
TABU
VUC~I.TROUBLESHOOTING
CHART
(CODt.)
(ENGlNI·Tt1RIIOCHAJlCED)
TroubJc
c.u.
Remedy
F
aUure of eDfine to
lacomct idle Refer to puqrapb
idle properly.
adjUSUIIICDt.
7Coo43.
Idle mixaare. Refer to puqrapb
7C.... 3.
Leak in the iDduction TifbteD &ll coMccnons
system. in the iDduction sys-
tem. Replace &Dy
para that an: defec·
tive.
UDe¥al cylinder Check cyliDder com-
compression. pression.
Faulty ipition Check enarc ipition
sysccm.
system.
I
rnproper
spuk pi'll Rqap
spark
plu,.
ppsminl·
Cloged iajcccor DOzzle. Remove and c1eaD.
puap.ph 7C-46.
Ditty air
ruter.
Check aDd deaD.
Insufficient fuel CIe&D fuel stniIlcr IIld
pressure. check fuel pump.
Low power IIld U!lcvcn
.~ixtuft tOO rich: ift. Check injector. Adjust
runmn.cragiDe.
dicated by slugisb mixtun: conaol.
enBiDe operation.
red exhaust flame
IIld black smoke.
Mixture tOO lall: in-
Check fuellincs for dirt
dieated by overhc:at-
or other restrictions.
in, or backfiring.
Check fuel supply.
Cloacd injector
Remove and clelll.
nozzles.
parqraph 7C46.
Leaks in induction
Tichtcn
aU
connections.
system.
Replace defective
putS.
Dirt ill injector inlet
Remove screen and
screen.
dean.
Defective sparit plugs.
Clean or replace spark
plup.
Improper grade of Fill tIIlk with recom-
fuel. mended ande.
POWER PLANT
ISSUED: 8118/72
212
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