Piper Cherokee Six - Page 391

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
TABLE
VII-ll.
ENGINE
TROUBLESHOOTING
Cause
Trouble
Remedy
Failure
of
engine
to
start.
Lack
of
fuel.
Check
fuel
system
for
leaks.
Fill
fuel
tank.
Clean
dirty
lines.
strainers.
or
fuel
cocks.
Check
fuel
selector
valve
for
proper
tank.
Check
fuel
pressure
with
electric
boost
pump
ON.
Check
mixture
control
knob
for
full
rich.
U
nderpriming.
Overpriming.
Incorrect
throttle
setting.
Defective
spark
plugs.
Improper
operation
of
magneto
breaker
points.
Prime
with
two
or
three
strokes
of
primer.
Leave
ignition
OFF
and
mixture
control
in
idle
cut-off.
open
throttle
and
unload
engine
by
cranking
for
a few
seconds.
Turn
ignition
switch
ON
and
proceed
to
start
in a
normal
manner.
Open
throttle
to
one-tenth
of its
range.
Clean
and
adjust
or
replace
spark
plug
or
plugs.
Refer
to
Table
II-I
for
spark
plug
gap
adjustments.
Check
internal
timing
of
magnetos.
Check
points.
Defective
ignition
wire.
Defective
battery.
2F19
Check
with
electric
tester
and
replace
any
defective
wires.
Replace
with
charged
battery.
POWER
PLANT
Revised:
11/4/83