Cub Crafters CC18-180 Pilot Operating Handbook page 242

SECTION 9.4
SUPPLEMENTS-EDM-800
Display
no
sharp
peak
CHT
500
400
300
CHT
500
400
300
CHT
500
400
300
Table 9-4-6 Engine Diagnosis Chart 3
REPORT TC10000AFM
Page number 9-4-30
Sympton
Probable Cause
Loss of peak
EGT
Decrease in
peak or flat
Usually the result
EGT
of 80 Octane fuel
response to
in 100 Octane
leaning
process
Below 10,000
ft. full throttle
causes EGTs
to rise
CHT more
than 500°,
EGT normal.
Adjacent EGT
may be low
Large DIF
(Excessive
EGT span) at
low RPM
CUB CRAFTERS
Poor ignition.
Detonation.
reduce power and
engine.
peak is obtained
Weak or
pump. If EGTs
defective
mechanical
fuel pump.
Leaking
exhaust
powder around
gasket
blowing on
CHT probe.
Blow by in
cylinder
rings.
Date of revision: 12/06/05
CC18-180
Recommended
Action
Have magneto
tested.
Enrich mixture,
relean mixture.
Repeat to find
power setting
where normal
or run rich.
Apply booster
drop, replace
fuel pump.
Look for white
cylinder to
determine leak
area.
Check
compression.
Issued: 5/31/05