CPU-XL VariSpark IOM 07-21
All rights reserved © ALTRONIC, LLC 2021
41
27.0 UNDERSTANDING AND USING THE SECONDARY
SPARK DIAGNOSTICS
27.1. The spark reference number represents 100 volts, or 0.1Kv, per count of
voltage demand at the spark plug and is calculated for every firing of each
cylinder. With a little experience, the engine operator will be able to tell when
spark plugs require changing. Abnormal conditions in the ignition system,
such as open or short circuits in the primary and secondary wiring, can also be
detected.
27.2 The reference “cylinder spark data” number can be viewed separately for each
ignition output (cylinder) in two ways, and compared to the average of the entire
engine:
n
Instantaneous value: INST
n
Cylinder average value: CAVG
FROM THE
PRESS
HOME SCREEN
TO VIEW
DISPLAY
SCREEN
TO GO
TO GO
TO
TO
UP IN
DOWN IN
SELECT
SELECT
FIRING
FIRING
NEXT
PREVIOUS
ORDER
ORDER
CYL.
NEXT
CYLINDER
SETUP
TO VIEW
TO GO TO
TO GO TO
TO
CURRENT
DIAGNOSTIC
CYLINDER
EXIT
CYLINDER
OFFSET
TIMING
GRAPH
F4
TIMING
ESC
F3
TO GO TO
NEXT CYL
IN FIRING
ORDER
F1
F1
NOTE: A spark number of 76 repre-
sents a voltage demand of 7.6Kv.
⬆
⬇
Summary of Contents for VariSpark CPU-XL
Page 88: ...CPU XL VariSpark IOM 07 21 All rights reserved ALTRONIC LLC 2021 88 FIGURE 7 MAGNET ASSEMBLY...
Page 89: ...CPU XL VariSpark IOM 07 21 All rights reserved ALTRONIC LLC 2021 89 FIGURE 8 MAGNET ASSEMBLY...
Page 90: ...CPU XL VariSpark IOM 07 21 All rights reserved ALTRONIC LLC 2021 90 FIGURE 9 MAGNET ASSEMBLY...