Raytheon Beech Baron E55 - Page 399

aeechcraft
BARON 55 AND
58
SHOP MANUAL
CHART
6-5
TR6UBLESH06TING
THE
ENGINE
(Continued)-
Indication
Probable
Cause
Remarks
b.
Defective
relief
valve
operation
b.
Replace
fuel
injector
pump.
in
fuel
injector.
c.
Restricted
recirculation c.
Replace
pump.
passage
in
fuel
injector
pump.
9.
Fluctuating
fuel
pressure,
a.
Vapor
in fuel
system,
excess
a.
Normally
operating
the
auxiliary
fuel
temperature,
pump
will
clear
system.
Operate
auxiliary
pump
and
purge
system.
b.
Fuel
gage
line leak
or
air
in
b. Drain
gage
line and
tighten
gage
line,
connections.
c.
Restriction
in
vapor
separator
c.
Check for restriction
in
ejector
jet
of
vent.
vapor
separator
cover.
Clean
jet
with
solvent
(only).
Do
not
use
wire
as
probe.
Replace
defective
parts.
10.
Low oil
pressure
on
engine
a.
Insufficient
oil in oil
sump,
oil
a.
Add
oil
or
change
oil
to
proper
gage
or
high
oil
temperature.
dilution
or
using improper
grade
viscosity.
oil
for
prevailing
ambient
tem
perature.
b.
Defective vernatherm
valve.
b.
Check
for
defective
vernatherm
valve.
Replace
valve
if
defective.
c.
Oil
cooler
restriction,
c.
Clean
oil cooler.
d.
Leaking,
damaged,
or
loose
oil
d.
Check
for
restricted
lines and loose
line
connection.
connections
and
for
partially
plugged
oil
filter.
Clean
parts,
tighten
connections
and
replace
defective
parts.
e.
Low
oil
pressure,
e.
Readjust
oil
pressure
as
necessary.
11.
Poor
engine
idle cut-off.
a.
Engine
getting
fuel.
a.
Check fuel control
for
being
in
full
"IDLE
CUT-OFF"
position.
Check
auxiliary
pump
for
being
"OFF".
Check
for
leaking
fuel
manifold
valve.
Replace
defective
components.
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