Piper Comanche PA-24 Service Manual page 510

Troubl.
Faib.re of
.ngin.
to
san.
(5-200 magnetOS only)
POWER
PLANT
ISSUED: 8118n2
PIPER COMANCHE SERVICE MANUAL
TABLE VIIA-ID. TROUBLESHOOTING CHAJtT
(ENGINE)
(CAlUIURETOR)
Cawe Remedy
Lade. of fuel. Ch.ck fu.l syst.m for leW.
Fill fu.l WIk •.
Clean dirty lines. strainen.
or fuel coc:a.
UncierpriminJ·
Prim. with
twO
or three
sttokes of prim.r.
Ovetpriming. Open throttl. and "unload"
•
•••
Incorrect throttl. setting.
Op.n throttle to on.·renth of
its . . . .
Defective spark plugs. Clean and adjUSt or replace
spark plug or plugs. Refct
to Paragraph 7 A·81 for
spark plug rap adjuscn.nu.
Defective ignition wire. Check Wlth electric reSter and
replace any def.ctiv. wires.
Improper operation of Ch.ck internal timing of
!napeto to breaker points mqneto. Ch.ck points.
Magnetiz.d impulse couplins D ......... tiz. impulse couplings.
left magneto only.
Frozen spark plug electrodes. Replace spark plugs or dry out
removed plull"
.\tixture contrOl in idle cut· Open mixture control.
off.
Internal failure. Check oil sump saccn for meral
parncles. If found. complete
overhaul of the engtne may be
indica.ted.
Broken contact .pring. Replace capacitor.
Improper switch wiring for Reverse magneto switch wires
left magn.to .tamng.
Shorted ianition switch or Check and replace or repair.
loose ground.
2 fa