WS8 Primary & Secondary Ignition Patterns

Dwell Time

11 Degrees all 4 cylinders

Burn Time
1.5ms All cylinders

Burn Voltage
25V Firing Voltage
300V.

Yes these readings are normal for the primary because the car runs good and there is no problems with the car. Dwell should be the same across all cylinders which it is. Firing voltage and burn time/voltage are good.

The parade pattern is good to know if the coil sparks weaker intermittently. It could help you for a intermittent missfire.

A stacked display can help diagnose because you can compare two waveforms.

Secondary Voltage Patterns.

Average firing voltage.

Average burn time.
The ignition voltages are normal because the car runs good.

Short sharp acceleration.

BURN TIMEFiring Voltage


All the above readings were at 5000RPM. The pattern are showing us this ignition system is in good condition.

Secondary Ignition Waveform.

Shorted Cylinder 4.
Firing Voltage
1=4-6kV
2=4KV
3=6-7KV.
4=9KV.

Burn Time
1=0.6MS
2=1.3MS
3-1.2MS
4=1.3MS

Shorted Waveform



When it is shorted the voltage should increase and you can see by the above waveform. This shows the ignition system is good.

Spark plug tester.

Cylinder 1. 5-7KV, 3.5ms Burn time
Cylinder 2. 4-6KV 0.8 ms Burn time
Cylinder 3 -2-3KV 1.4ms Burn Time
Cylinder 4 2-4KV 1.2MS burn time.

The spark plug tester was in plug one. the gap is larger in the tester so a higher voltage is produced. We could see a good spark.