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CESSNA
MODEL
182S
SECTION
4
NORMAL PROCEDURES
Using
the
above recommended procedures can provide
fuel
savings
in excess
of
5%
when compared to typical
operations at full
rich
mixture. ln
addition,
the above procedures will minimize
spark
plug fouling since
the
reduction
in
fuel
consumption results
in
a
proportional reduction
in
tetraethyl
lead passing through the engine.
FUEL VAPOR PROCEDURES
The
engine
fuel
system
can
become susceptible
to
fuel
vapor
formation on the ground during warm
weather. This will
generally
occur when
the
outside ambient
air temperature is above
80"F.
The situation is further aggravated by the fact that the engine
fuel
flows are
lower
at
idle and
taxi engine speeds.
When
vapor
occurs
as
evidenced
by
idle engine speed and fuel flow fluctuations,
the
following procedures are recommended.
1.
With
the
mixture
full rich,
setthe
throttle at
1800 RPM
to
2000
RPM.
Maintain
this power setting
for
1
to 2
minutes
or
until
smooth engine operation returns.
2.
Retard the throttle
to
idle to verify
normalengine
operation.
3.
Advance
the
throttle
to
1200 RPM and lean the mixture
as
described
under FUEL
SAVINGS PROCEDURES
FOR
NORMAL OPERATIONS.
4.
Just
prior
to
TAKEOFF, apply
full
throttle,
for approximately
10
seconds to verify smooth engine operation
for
takeoff.
NOTE
When
the
engine
is
operated above 1800 RPM,
the
resulting increased
fuel flow also
makes
for
lower
fuel
temperatures throughout
the
engine
fuel system.
This
increased
flow
purges
the fuel
vapor and the cooler
fuel
minimizes vapor formation.
Nov
15/00
4-29
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