Example 1
Spark discharge occurs at high voltage, the discharge duration is short.
The cause of the malfunction is that the spark gap is too large.
Example 2
The spark discharge occurs at low voltage, the trailing edge is flat, the discharge duration is long. The final phase of the discharge is distorted. With such a signal form, misfires of the working mixture are possible.
The cause of the malfunction is that the spark gap is too small.
Example 3
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The spark discharge occurs at low voltage, the trailing edge is flat, the discharge duration is long. However, no signal distortion is observed.
The cause of the malfunction is that the spark gap is clogged.
Example 4
The spark discharge occurs at high voltage, the duration of the discharge is short. The difference between this oscillogram and the oscillogram in example 1 is very difficult to detect.
The cause of the malfunction is that the high-voltage wire is frayed and the contact of the tips is broken.
Example 5
There are no oscillations in the attenuation section.
The cause of the malfunction is a short circuit in the ignition coil.