71 - 02 - 00
Page - 71-03
Reissued: August 1, 1986
2H18
CHART 7101. TROUBLESHOOTING (ENGINE) (CONT)
Failure of engine to start. Defective battery. Replace or charge battery.
(cont.)
Mixture control in IDLE Open mixture control.
CUT-OFF.
Shorted ignition switch or Check and replace or repair.
loose ground.
Failure of engine to idle Incorrect carburetor idle Adjust throttle stop to ob
properly. adjustment. tain correct idle.
Incorrect idle mixture. Adjust mixture. Refer to
engine manufacturer’s hand
book for proper procedure.
Leak in the induction Tighten all connections in
system. the induction system. Re-
place any parts that are de-
fective.
Uneven cylinder compression. Check condition of piston rings
and valve seats.
Faulty ignition system. Check entire ignition system.
Open primer. Lock primer.
Improper spark plug set- Check spark plug gap.
ting for altitude.
Insufficient fuel pressure. Adjust fuel pressure.
Dirty air filter. Clean or replace.
Low power and uneven run- Mixture too rich; indicated Check primer and readjust
ning engine. by sluggish engine opera- carburetor.
tion, red exhaust flame (at night)
and black smoke (in extreme
cases.
Mixture too lean; indi- Check fuel lines for dirt or
cated by overheating or other restrictions. Check
backfiring. fuel supply. Readjustment of
carburetor may be indicated.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
To Next Page
Loading...
