Textron Lycoming O-540 Series - Failure of Engine to Idle Properly; Low Power and Uneven Running

TEXTRON LYCOMING OPERATOR'S MANUAL
0-540 & 10-540 SERIES
SECTION 6
TROUBLE PROBABLE CAUSE REMEDY
Failure of Engine
to Idle Properly
(Cont.)
Low Power and
Uneven Running
Plugged
fuel
injector
nozzle
Flow divider fitting
plugged
Mixture too rich; in-
dicated by sluggish
engine operation, red
exhaust flame at
night. Extreme cases
indicated by black
smoke
from
exhaust
Clean or
replace
nozzle.
Clean fitting.
Readjustment
of
fuel
injector or carburetors
by
authorized
personnel
is indicated.
Mixture too lean:
indicated by over-
heating
or backfiring
Leaks in induction
system
Defective spark plugs
Improper
fuel
Magneto
breaker
points not
working
properly
Defective
ignition
wire
Check fuel lines for dirt
or other restrictions.
Readjustment
of fuel
in-
jector or carburetor by
authorized
personnel
is
indicated.
Tighten all
connections.
Replace
defective
parts.
Clean
and gap or
replace
spark
plugs.
Fill
tank with
fuel
of
recommended
grade.
Clean
points.
Check inter-
nal timing
of magnetos.
Check wire with electric
tester. Replace defective
wire.
6-3