2E4
TABLE VIIIA-II. ENGINE TROUBLESHOOTING (cont.)
Failure of engine to Internal failure. Check oil screens for
start. (cont.) metal particles. If
found, complete over-
haul of engine may be
indicated.
Failure of engine to Incorrect idle mixture. Adjust mixture.
idle properly.
Leak in the induction Tighten all connections
system. in the induction sys-
tem. Replace any parts
that are defective.
Incorrect idle adjust- Adjust throttle stop to
ment. obtain correct idle.
Uneven cylinder com- Check condition of pis-
pression. ton rings and valve
seats.
Faulty ignition system. Check entire ignition
system.
Insufficient fuel pres- Adjust fuel pressure.
sure.
Lower power and uneven Mixture too rich; indi- Readjustment of fuel in-
running. cated by sluggish en- jector by authorized
gine operation, red ex- personnel is indicated.
haust flame at night.
Extreme cases indi-
cated by black smoke
from exhaust.
Mixture too lean; indi- Check fuel lines for
cated by overheating dirt or other restric-
or backfiring. tions. Check fuel in-
jection nozzles.
Trouble Cause Remedy
Revised: 8/31/77
CHEROKEE ARROW III SERVICE MANUAL
POWER PLANT - LYCOMING
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