Measurement Method

Measurement Method:

1. Clamp the SECONDARY PICKUP around the spark plug cable.

NOTE:
a. The peak ignition voltage will be reversed when the spark cables No. 2 and No. 4, or No. 1 and No. 3 cylinders are clamped.
b. Because of the two-cylinder simultaneous ignition system, the waveforms for two cylinders in each group appear during waveform observation (No. 1 cylinder - No. 4 cylinder, No. 2 cylinder - No. 3 cylinder). However, waveform observation is only applicable for the cylinder with the spark plug cable clamped by the secondary pickup.

2. Clamp the spark plug cable with the Trigger pickup.

NOTE:
a. Clamp the trigger pickup to the same spark plug cable clamped by the secondary pickup.
b. Identifying which cylinder waveform is displayed can be difficult. For reference, remember that the waveform of the cylinder attached to the secondary pickup will be displayed as stable.