Cub Crafters CC18-180 Pilot Operating Handbook page 240

SECTION 9.4
SUPPLEMENTS-EDM-800
Display
CHT
500
400
300
CHT
500
400
300
CHT
500
400
300
CHT
500
400
300
CHT
500
400
300
CHT
500
400
300
Table 9-4-4 Engine Diagnosis Chart 1
REPORT TC10000AFM
Page number 9-4-28
Sympton
Probable Cause
Spark plug not
75° to 100°
EGT rise for
fouling, faulty plug.
one cylinder
wire or distributor.
during flight
Improper timing:
EGT Increase
or decrease
retarted ignition;
after ingnition
system
advanced iginition.
maintenace
Loss of EGT
for one
cylinder. cylinders are
Engine rough
Loss of EGT
Failed probe
for one
or failed wire
cylinder; no
digital EGT
Decrease in
EGT for one
cylinder
Increase in
DIF
compression
(Excessive
EGT span) at
low RPM
CUB CRAFTERS
Recommended
Enrich mixture to
firing due to
plugs checked.
Check EGT for
high EGT

each magneto to
low EGT

Stuck valve.
Other
okay.
Swap probes to
harness.
harness is bad.
Intake valve
not opening
fully; faulty
valve lifter.
Low
(blow by) in
cylinder
Date of revision: 12/06/05
CC18-180
Action
return EGT to
normal. Have
determine any
uneven timing.
Have valve
train
checked.
determine if
probe or wire
Have valve
lifter or
rocker arm
checked.
Check
compression.
Issued: 5/31/05