Raytheon Beech Baron E55 - Page 398

~eechcraft
BARON
55
AND
58
SHOP
MANUAL
CHART
6-5
TROUBLESHOC)TI~IG
THE
ENGINE
(Continued)
Indication
Probable Cause
Remarks
5.
Engine
runs
rough
at
speeds
a.
Improper
fuel-air
mixture
b.
Check
manifold
connections for
above idle
leaks.
Tighten
loose
connections.
Check fuel
control
linkage
for
setting
and
adjustment.
Check
fuel
filters
and
screens
for dirt. Check
for
proper pump
pressure,
and
replace
pump
if
defective.
b.
Restricted fuel
nozzle.
b.
Remove
and clean all
noules.
c.
Ignition
system
and
spark
plugs
c.
Clean
and
regap
spark plugs.
Check
defective.
ignition
cables
for
defects.
Replace
defective
components.
6.
Engine
lacks
power,
reduction
a.
Incorrectly adjusted
throttle
a.
Check
movement
of
linkage
by
in
maximum manifold
pressure
at
control,
"sticky"
linkage
or
dirty
air
moving
control from
idle
to
full
throttle.
critical
altitude.
cleaner.
Make
proper
adjustments
and
replace
worn
components.
Service
air
cleaner.
b.
Defective
ignition
system.
b.
Inspect
spark
plugs
for
fouled
electrodes,
heavy
carbon
deposits,
eroded
electrodes,
improperly
adjusted
electrode
gaps,
and cracked
porcelains.
Test
plugs
for
regular
firing
I
under
pressure.
Replace
damaged
or
misfiring plugs.
Spark
plug
gap
should
be
0.018
to
0.022 inch.
c.
Loose
or
damaged
intake
c.
Inspect
entire
manifold
system
for
manifolding.
possible leakage
at
connections.
Replace
damaged
components,
tighten
all
connections and
clamps.
d.
Fuel
nozzle defective,
d.
Check
for
restricted
noules and
lines and clean
or
replace
as
necessary.
7.
Low fuel
pressure.
a.
Restricted
flow
to
fuel
metering
a.
Check
mixture
control for full
travel.
valve.
Check
for
restriction
in
fuel
filters
and
lines,
adjust
control
and
clean filters.
Replace
damaged
parts.
b.
Fuel
control
lever.
b.
Check
operation
of throttle
control
and
for
possible
contact
with
cooling
shroud.
Adjust
as
required
to
obtain
correct
operation.
c.
Incorrect
fuel
injector
pump
c.
Check
and
adjust
using appropriate
adjustment
and
operation.
equipment.
Replace
defective
pumps.
d.
Defective
fuel
injector
pump
d.
Replace
pump.
relief valve.
8.
High
fuel
pressure.
a.
Restricted
flow
beyond
fuel
a.
Check
for
restricted fuel
noules
or
control
assembly.
fuel
manifold valve.
Clean
or
replace
nozzles.
Replace
defective
fuel
manifold
valve.
515
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