Piper PA-24 Comanche Service Manual page 395

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PtPER COMANCHE SERVice MANUAL
TABLE VIIA·lll. TROVBLESHoonNG CHART
(ENGINE) (FUEL INJECTOR) (cont)
Troub.
eau.
Remedy
Low power aDd
IlDCVCft
Lcait La lDcWc1ion system.
Tithten all connections.
Nn.niJlI.
(eeae.)
Replace defective pam.
Poor fuel. Fill tank with fuel of
recommended p'ade.
Mapero breaker points Cleu points. Check internal
not workial properly.
timiaa
of mlpetos.
Defective iplition wire. Check wire with electric
tesnf.
Replace defective
wire.
Improper ipition
cimini.
Check mqnetos for riming
uad syDcbroni%ation.
Defective spark plu, Replace conncCton on spuk
tcrmiMl coftJlecton. plue wire.
Incorrect valve clearancc.
Adjutt valve clcarance by
changinl pllsh rods.
Flow meter reads high. Cloged nozzle.
Remove and flush with aee-
tone. Blow throu,h orifice
with compressed air • 100
pli.
Fwllrc of engine to Throttle lever nut alit Adjust throttle lever.
devclop full pOWCT. of adjustment.
Leak in induction system. TiJhtcn iDtake pipe mOllnnnl
flange
nuts aDd tighten
intake manifold.
Mixture tOO Ian.
InjectOr ml1$t be reealibraeed.
Throttle linkap limiting Check throttle
link.
and
travel of throttle valve. throttle valve opening.
Restrictions in inlet air
Examine air scoop and
scoop.
removc restrictions.
Improper fuel.
Fill u.nk with recommendcd
aviation fuel.
Failiry ignition. Ti.hten all connections.
Check system with testct.
Check ilnition timing.
Rough engme. Cracked e . e moune. Replace moune.
Unbalanccd propeUer. Remove propeUer lDd have
it checked for balance.
Ddective mounting Install new mounting
bushings. bllshinp.
POWER PLANT
ISSUED: 8/18n2
2
E15