Mitsubishi Eclipse Workshop Manual page 228

16-16
IGNITION
SYSTEM.
-
Service Adjustment
Procedures
Waveform observation points
Point
A
:
The height, length and slope of the spark line (refer
to abnormal waveform examples
1,2,3
and 4
show the following
trends.
)
o
Spark line
Plug
gap
Condition of
electrode
Compression
force
Concentration of
air
mixture
lgnition
timing Spark
plug
cable
s
o,
c
Q)
J
Long
Small
Normal
Low Rich
Advanced
Leak
Short
Large
Large wear
High Lean Retarded
High resistance
c
o)
o)
I
High
Large
Large wear High Lean Retarded
High
resistance
Low Small
Normal
Low Rich Advanced Leak
Slope
Large
Plug
is
fouled
Point B :
Number
of
vibrations
in reduction vibration section
(Refer
to
abnormal waveform example
5)
Number
of
vibrations
Coil and condenser
Three
or
more
Except above
Normal
Abnormal
Point C :
Number
of
vibrations
at
beginning
of
dwell
section
(Refer
to
abnormal waveform example
5)
Number
of
vibrations
Coil
5-6
or
higher
Except above
Normal
Abnormal
Point D :
lgnition voltage height (distribution per each cylinder) shows the following
trends.
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