Mitsubishi MOTORS 3000GT Bedienungsanleitung Seite 490

EXAMPLES OF ABNORMAL WAVE-FORMS
Abnormal wave-form
Example 1
Example 2
Example 3
Example 4
Example 5
ENGINE ELECTRICAL - Ignition System
Wave characteristics
Spark line is high and short.
Spark line is low and long, and is
sloping. Also, the second half of
the spark line is distorted. This
could be a result of misfiring.
3
Spark line is low and long, and is
sloping. However, there is almost
no spark line distortion.
Spark line is high and short.
No waves in wave damping set-
tion.
TSB Revision
Cause of problem
Spark plug gap is too large.
Spark plug gap is too small.
Spark plug gap is fouled.
Spark plug cable is nearly falling
off. (Causing a dual ignition)
Rare short in ignition coil.