Failure Of Engine To Start; Failure Of Engine To Idle Properly - Piper PA-44-180 SEMINOLE Maintenance Manual

TROUBLE

Failure of engine to start.

Failure of engine to
idle properly.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
CHART 7101. TROUBLESHOOTING (ENGINE)
CAUSE
Lack of fuel
Overpriming
Incorrect throttle setting.
Defective spark plugs.
Defective ignition wire.
Defective battery.
Improper operation of magneto
breaker.
Lack of sufficient fuel flow.
Internal failure.
Water in fuel injector
or carburetor.
Incorrect idle mixture.
Leak in the induction system.
3D24
REMEDY
Fill fuel tank. Check fuel
system for leaks. Clean dirty
lines, strainers or fuel valves.
Check fuel selector valve for
proper tank. Check fuel pressure
with electric boost pump ON.
Check mixture control knob
for full rich.
Open throttle and unload
engine by engaging starter.
Mixture in idle-cut-off.
Open throttle to one-eighth of
its range.
Clean and adjust or replace
spark plugs.
Check with electric tester and
replace defective wires.
Replace with charged battery.
Clean points. Check internal
timing of magnetos.
Disconnect fuel line at fuel
injector and check fuel flow.
Check oil screens for metal
particles. If found, complete
overhaul of engine may be
indicated.
Drain fuel injector or carburetor
and fuel lines.
Adjust mixture.
Tighten all connections in the
induction system. Replace
any parts that are defective.
Page 71-02
Revised: May 15, 1989
7 1 - 0 2 - 0 0