Primary and secondary ignition patterns

I had to use a lab scope to get the primary ignition patern with the engine on idleing.I did these following tests on the 4A-FE engine.My task was to record the average firing voltage,the avarege burn voltage,average burn time and the average dwell time.I had to do this for each cylinder.

                              cyl1         cyl2          cyl3        cyl 4
firing voltage          248v        248v        248v       248v
burn voltage          55.6v       55.6v       55.6v      55.6v
burn time              1.48ms     1.48ms     1.48ms   1.48ms
dwell time             6.2ms       6.2ms       6.2ms     6.4ms

all these voltage reading are normal because they are all the same or when not the same they are very close together.This shows a good steady primary ignition voltage.

In this oscilloscope patern it shows the charge and discharged pattern of the coil.As seen in this pattern it drops shows the dwell the it rises by alot,this shows the burn time.The burn and dwell time is both measured in ms.the voltage division of this pattern was 5v and time was 1s.

Using stacked display is an advantage because it makes the pattern more accurate can see the voltage the voltage drop and rise more acuratly.
Next task was to view secondary ignition patern.I was asked to record the firing voltage and the burn time for each cylinder.The first one I had to do was under snap accelaration.

                                cyl1            cyl2                cyl3            cyl4
firing voltage            5.4kv          6.2kv              5.9kv         6.2kv
burn time                 1.1ms          1.8ms             0.65ms       0.71ms
snap acceleration     9.8kv           8.4kv             9.8kv          9.0kv

In this result it shows that the secondary is not as consistant as the primary but not bad either.Also shown is that it does not hav the dwell time.

The picture above is the pattern of the snap acceleration secondary ignition.The middle part were it goes up is the part were we reved the engine.This is were the firing voltage is calculated.This picture is of cylinder1.This is similar to the primary but the fact that secondary does not read dwell time makes them different

Next on was with a spark tester.Do this by ataching a spark tester to sparkplug wire

                           Cyl1           cyl2           cyl3        cyl4
 firing voltage       13.9kv        6.4kv        6.4kv      6kv
 burn time            0.7ms          1.41ms     1.12ms    1.4ms

In this results it shows that the voltage goes verry high on cyl 1 but the drops and stays steady and at this time the burn time is lower.This is because the spark tester was on cyl 1

voltage division in this one was 4kv and time was 8.7ms.In this picture it shows that it has one spike.this is where it sparked and where the voltage was higer and the time was lower.