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CHEROKEE
140 "D"
SECTION IV
IN
FLIGHT
ENGINE
POWER LOSS IN-FLIGHT
Complete
engine
power loss is
usually
caused by
fuel flow
interruption,
and
power
will
be
restored
shortly
after
fuel flow
is
restored.
If
power loss
occurs at
low
altitude,
the
first
step
is
to
prepare
for
an
emergency
landing
(See
POWER
OFF
LANDING).
Maintain
an airspeed of at
least
80 MPH
IAS,
and
if
altitude
permits, proceed
as
follows:
1. Fuel
Selector
-
switch
to another
tank
containing
fuel.
2. Electric Fuel Pump
-
On
3.
Mixture
-
Rich
4. Carburetor
Heat
-
On
5. Engine Gauges
-
check
for
an
indication
of the cause
of Power Loss.
6. Primer
-
Check Locked
7. If
no
fuel pressure
is
indicated,
check
tank selector
position
to
be
sure it
is
on
a
tank containing
fuel.
When Power
is
Restored:
8. Carburetor
Heat
-
Off
9.
Electric Fuel Pump
-
Off
If the above steps
do
not
restore
power, prepare for
an
emergency
landing.
If time
permits:
1.
Ignition
Switch
-
"L"
then
"R"
then
back
to
"BOTH".
2.
Throttle
and Mixture
-
Different
settings.
(This may
restore
power if problem
is too
rich
or too lean
a
mixture,
or
partial fuel
system
restriction).
3.
Try another
fuel
tank
-
(Water
in
the
fuel
could take
some time to
be
used
up,
and allowing the
engine
to
windmill
may
restore
power.
If
power loss
is
due
to
water,
fuel
pressure
indications
will be
normal).
700801
26
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