Cub Crafters CC18-180 Pilot Operating Handbook page 238

SECTION 9.4
SUPPLEMENTS-EDM-800
Detonation may
compression resulting from fuel with too low an octane
rating, or from avgas contaminated by jet fuel. Fuel
additives, such as lead, boost the octane rating and slow
down the combustion process, producing an even
pressure on the piston.
Pre-ignition is caused by hot spots in the cylinder. Ignition
occurs prior to the spark plug firing. The EDM depicts
pre-ignition as a sudden large increase of the EGT. This
may occur in one or more cylinders.
cylinder column(s) will flash while an EGT higher than
2000°F will be displayed.
ignition will destroy your engine in less than a minute
unless you take immediate corrective action.
9.4.10 Parameter Scan
Listed below are the sequence, parameter description
and example of the display.
Select Parameter
Switch Description
T, A Voltage,
System Bus
Difference
T, A
between
hottest and
coldest EGT
T, A, F RPM
T, A, F MAP
F, A Fuel
Remaining
REPORT TC10000AFM
Page number 9-4-26
occur under
At this temperature pre-
Example
14.2 BAT
80 DIF
2450 RPM
23.1 MAP
37.2 REM
CUB CRAFTERS
CC18-180
conditions of
The affected
Comments
Battery voltage
Dot indicates most
widely deviating cylinder
RPM
Manifold pressure
In gallons, liters or
pounds or kilograms
Issued: 5/31/05
Date of revision: 12/06/05
high