Piper Comanche PA-24 Service Manual page 558

PIPER COMANCHE SERVICE MANUAL
Trouble
Low power and Wlnen
",nnill!!.
(cont.)
Flow IIIccer reads
biP.
Failure of engine to
clndop full power.
Rough engine.
TABLE VlIJI.U. TltOUllLESHOOTING OIAJlT
(ENGINE)
(CODt)
Cawc
Leak in lIWIifoldline.
Leak in incluc:tion syscan.
Poor fuel.
Magncco breaker points
not workinc properly.
Defective iplilion wire.
Improper iplition timing.
Defective spar!< plUI
terminal conntC'ton.
Incorrect valve c1ean.ncc.
ClogecInozzle.
Throttle lever nut out of
adjustment.
Leak
in
induction system.
Mixture too lean.
Throttle link ... limiting
mvel of throttle valve.
Restrictions in inlet ili
scoop.
Improper fuel.
Faulry icnition.
Cracked engine mount.
Unbalanced propeller.
Defective mounting
busbinJls.
2 G4
Jlemedy
Tiahten
fiftinp.
Tighten
all
collllCCtioas.
Replace clcfective pans.
Fill WIk
with fuel
of
recoDWendecllflcle·
C1eaa points. Check internal
timing of ........ tos.
Check wire
with
ele<tric
teSter.
Replau defective
wire.
Check
."....cto. for timi.,.
and synchronization.
Replace
COMectors
on .par!<
plua wire.
AdjUSt valve
clclf&l\CC
by
changina push rods.
Remove ""d auah with acetone.
Blow throuab orifice with
comprcssecl air - 100 psi.
Adjust throttle lever.
Ti!lhrcn intake pipe mounting
flange nuts and tighten
intake manifold.
Injeceor must be rccalibnred.
Check throttle link ... and
throttle valve opening.
Examine air scoop and
remove resalCtlons.
Fill tank with recommended
a.viation fuel.
Tishten all connections.
Check system with tester.
Check ignition twing.
Replace mount.
Remove propeUer iUld have
it checked for balance.
lnstall new mounting
busbings.
POWER PLANT
ISSUED:
8/18172