Piper Comanche PA-24 Service Manual page 447

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PIPER COMANCHE SERVICE MANUAL
Trouble
Foilure of .ngine to
start.
(S·200 mapeto. only)
TABLE VlHU.
TROUBLESHOOTING
CHAJtT
(ENGINE)
c.u..
Lad< of fuel
Undcrprimiq.
<>-priming.
Incorrect tbrottle
sortinf.
Def.ctive
spark
pi .....
Defective ignition wire.
Improper opotation of
magneto
to
brnl<cr
poinO.
Magnetiz.d impulse eouplinJ •
left
magnet.,
only.
Frozen spari< pi", .1.ctrOde •.
.\tlXture
control in Idle cut-
off.
Internal foilur •.
Broken contact spring.
Improper
switch
wirin, for
I.ft magneto starting.
Shorted ilnition
SWitch
or
loose ground.
2
B21
Remedy
Check fuel sysrcm for
leaks.
Fill fael WIk.
CInD dirty lincs •• tnincrs.
or fud cocks.
Prime
,.;m
two
or
tiIrft
srrokcs of primer.
Open throttl. and ·'unload"
..,.;ae.
Open throttl. to on .... nth
ofio . . . .
Clean and adjust or replace
spark pi", or plup. R.fer
to Puagnph 7·S 1 for spark
pi", pp adjusan.no.
Check ,.;th .I.eme "' ....
and replac. any def.ctive
wires.
Check internal cimiq of
magneto. Check pomo.
Dem .... etiz. impulse couplinJs.
Replac. spark plllJl or dry OUt
removed pi .....
Open mixture conuol.
Ch.ck oil sump screen for metal
particles. If found. compl.:e
overhaul of the engine may be
indicated.
Replace capilcitor.
Re"Vcne mqneto switch wlrn
Cbeck and replace or repair
POWER PLANT
ISSUED: 8/18/72