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Aircraft
alternator belt comes off (Continental)
Alternator
bracket breakage. Lycoming Aircraft Engines
Aircraft alternator
inoperative
Black deposits on
Champion spark plug gasket
Blown or leaky nose seal.
Crankshaft seal leaks. Oil leak at crank seal.
Bent push rod. Bent
pushrod
Aircraft engine binding
when hot
Bearing wear
Black smoke
Broken alternator bracket
(Lycoming)
Broken distributor gear
teeth on Bendix Magneto
Broken rocker boss
Broken valve spring
Burn marks on outside of
cylinder barrel
Cabin loses pressure at
altitude and partial power
Camshaft
followers (tappets) chipped on edges
Camshaft followers
(tappets) not rotating
Cannot reach critical
altitude
Can't get fuel flow at full
throttle - lean
Can't rotate magneto to
get timing.
Carbon particles in oil
filter or screen
Carburetor runs rich
Checking and Adjusting Dry
Tappet Clearance on Lycoming Engines
Checking the ignition
filter or magneto condenser
Circumferential cylinder
head cracks
Cockpit fuel flow
differential on Twin-Engine planes
Collapsed valve spring.
Weak valve spring
Continental aircraft
engine is hard to turn backwards
Crack in dome of AC fuel
pump on C series or O-200 engine
Cracked spark plug
insulator
Cracked crankshaft at
alternator gear drive flange
Cracked oil cooler
-Continental engines
Cracked pinion housing
assembly. Cracked starter housing
Crack between valve seats
Chrome flaking off ring
face
Crankshaft
gear separated from Lycoming Crankshaft
Cylinder stud failure.
Broken stud
Cylinder head to barrel
separation
Damaged alternator crank
gear (Continental 520 series)
Dead magneto, inoperative
magneto, rough magneto, roughness
Decrease in EGT for all
cylinders
Decrease in EGT after
maintenance
Decrease in EGT for one
cylinder
Decrease in peak, increase
in CHT
Dirt, Silica and Silicon
Drop in manifold pressure
and high cylinder temperature (CHT)
Drop in cylinder head
temperature. No change in EGT. Rough engine
Erratic idle fuel
pressures. Continental Fuel Injection
Aircraft engine kicks back
on start. Kick back
Engine overboosts. High
manifold pressure
Engine surges
Engine shudder Lycoming
aircraft engine
Engine stumbles. Lycoming
injected engine hangs at 1,700 to 1,80 rpm
Engine won't idle unless
boost pump off
Engine thru-bolts loose.
Loose thru bolts
Engine speed varies with
flight attitude
Aircraft Engine quits on
landing or with throttle off
Erratic fuel flow and
manifold pressure (GTSIO-520 engine)
Erosion on top of piston
Excessive rpm drop on
left/right magneto
Exhaust valve leakage,
effects
Exhaust valve leakage -
causes
Exhaust bypass valve
fails to close. Wastegate fails to close
Exhaust valve leakage -
O-200 cylinder
Failure to change pitch or
rpm.
Failure to feather.
Sluggish feather
Fire on ground
Fluctuating rpm. Erratic
rpm. Rpm won't stabilize
Fluctuating EGT
Fluctuating Fuel Flow
Fluctuating fuel pressure
Fluctuating oil pressure
Foam in oil
Front main bearing
failure
Fuel drips out of
carburetor into airbox or ground.
Fuel dripping out of
carburetor. Flooded carburetor
Fuel stains on outside of
carburetor
GTSIO-520 7th stud
engine, crankcase crack at 7th stud
Hard Starting. Difficult
starting. Won't start. Slow starter
Hard starting in cold
weather
Hesitation or stumble.
Fuel smell in cabin (pressurized aircraft)
High Cylinder temperature
High EGT on takeoff.
Slight roughness
High EGT on one cylinder
High fuel flow
High fuel pressure on C
series or O-200 engine High fuel pressure on C series or O-200 engine
High Indicated Fuel Flow
High manifold pressure at
idle
High Oil Pressure
High Oil Temperature
High Oil Consumption
High wear metals in wear
analysis
How to check the starter
solenoid
Hunting or wavering. Tach
needle wavers
Hydraulic lifter
malfunctions
Idle mixture adjustment
on Marvel Schebler (Precision) carburetors
Idle mixture instability
Improper propeller speed
Impulse coupling rivet
failed
Ignition lead broken. Hole
in ignition lead.
Inaccurate
dipstick reading
Inability to adjust idle
mixture (carburetor engine)
Inability to adjust oil
pressure
Increase in EGT
Intake valve spring seats
cracked
Jet fuel contamination,
detection
Lifter noise. Tappet
noise
Leaking turbocharger
seals. Oil in exhaust. Oil in intake
Lean Engine
Leanest Cylinder - which
one
Lean. Only small rise in
EGT when leaning -carbureted engine
Loose guide
Loss of propeller control
Loss of power going to
altitude
Low Oil Pressure. No Oil
Pressure
Low Power. Loss of
Manifold Pressure. Low RPM
Low Power - High Manifold
Pressure
Low Fuel Flow
Low compression.
Compression loss
Low oil temperature
Low power and high oil
consumption
Lycoming Nose Seal
Leakage. Crank seal leaking
Magnesium in oil analysis
Magneto not firing
Manifold pressure loss in
clouds
Maximum static rpm too
low. Low static rpm.
Metals
Morphology (description)
Metal in oil. Continental
engine, long brass slivers
Metal in oil, or oil
filter - steel
Metal in oil, or oil
filter - aluminum
Metal in oil, or oil
filter - Bronze
Metal in oil or oil filter
- chrome
Minimum desirable CHT
and oil temp.
No rpm drop when checking
magneto
Noise - buzzing or machine gun
rattle
Normal metallic element
content in engine lubricating oil.
Off idle stumble, poor
idle. Engine will not accelerate
Oil in Combustion
Chamber. Related problem oil in intake
Oil leak at rear of
accessory case TCM IO-360
Oil leaking from nose
cone - fixed pitch propeller
Oil leakage at vacuum
pump pad on starter adapter
Oil level rise -
unexplained
Oil out engine breather.
Blowby
Oil turns black
Oil leak at through-stud
- Lycoming engines
Oil leak between the
vacuum pump and vacuum pump mounting pad.
Oil leak at AC fuel pump
on C series or O-200 engine
Oil leak at crankcase
parting surfaces
Oil Leak at crankshaft
nose seal
Oil leak at push rod
tube
Oil leak between
propeller governor and accessory housing.
Oil leak at the
tachometer adapter seal on O-320-H2AD engine
Orange-yellow glaze on
spark plug insulator tip
Overspeed on takeoff
Paint on cylinder changes
color
Piston skirt breakage
Piston skirt scuffing
Power loss during cruise
Poor idle cut-off
Poor acceleration. Engine
stumbles or hangs.
Poor mixture adjustment
response
Polished bearing back
Preignition
Premature impulse
coupling failure
Propeller leaking red
oil
Propeller surging
Propeller
won't go into low pitch.
Propeller goes to feather
at idle on the ground
Rich engine
Rich or lean mixture,
carbureted engine. Leak at bowl gasket
Rocker shaft stud nuts
strip on Continental 360 series engine
Radio interference. Radio
noise.
Rotator cap missing in
Lycoming aircraft engine
Rocker shaft wearing
hole through rocker cover on Lycoming aircraft engine
Rocker shaft or bushing
wear
Rough Continental or
Lycoming engine on first flight
Rough engine. Misfire.
Engine has vibration
Rough engine shut-down
Rough engine. Testing the
magneto coil. Hard start
Rough at low cruise power
settings, M20B,M20C
Rough Idle. Poor idle
RSA Fuel Injector
Functional Description
RSA Fuel Injector
Troubleshooting
Scuffed piston skirt
Scuffed cylinder walls
Slow rise in EGT in one
cylinder
Sluggish start
Sluggish manifold
pressure gauge
Sluggish or erratic
propeller operation
Small drop in manifold
pressure in cruise
Spark plug carbon
deposits. Fouled spark plug
Spark Plug ceramic
Insulator Cracked
Spark plug gray ash
deposits. Fouled spark plug
Spark plug oil deposits.
Fouled spark plug
Spark plug lead deposits.
Lead fouled. Fouled spark plug
Spark plug nut galled or
seized
Spark plug insulator
"cigarette" burned
Spark Plug seized
Spark Plug terminal end
coiled spring broken
Split manifold pressure
(twin engine)
Starter ring gear damaged
on Lycoming aircraft engine
Starter adapter shaft
broken
Starter adapter slipping
Starter motor runs but
won't crank engine
Stiff or Binding engine
Stretched intake valve -
Tuliped intake valve
Stuck Valve. Sticky
valve
Sudden, maximum rise in
CHT, decrease in EGT
Sudden loss of peak EGT
Throttle or mixture
control hot
Throttle stiff and
rough
75oF EGT rise for one
cylinder
75oF EGT rise for all
cylinders
The Marvel Schebler
Carburetor Idle Circuit
The Function of Air-bleed
Holes
Turbocharger controller
fails to open oil flow
Turbocharger controller
fails to close oil flow. Sluggish operation
Turbocharger controller
fails to close oil flow or operates sluggishly
Turbocharger controller
fails to open oil flow
Turbocharger wheel
binding or dragging
Turbocharged engine goes
to normally aspirated. Turbo goes off-line
Turbo goes off-line.
Normally aspirated. Turbocharger intermittent
Unsteady fuel pressures.
Lean misfire. Beech B55 Baron.
Unstable manifold
pressure gauge. Fluctuating MP
Valve marks on top of
piston
Valve rotator cap missing on
Lycoming engine
Valve seat falls out
Vibration hum or buzz in
airframe
White smoke exhaust. Oil
blown out exhaust, turbocharged a/c.
Worn impulse coupling and
stop pins
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If
this doesn't work I'm going over the side Parachute Sense US
NAVY 1944