Fluctuating neg. to ground on ignition coil

67Dart273 said
Try to find some local amateur radio operators, and if one of them doesn't have a scope, they may lead to other electronics oriented folks
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Finally got in touch with a friend and his oscilloscope, not sure of what we found out.

Can anyone interpret these graphs?

Tried on a single spark plug wire on cylinder 1, looked like this:

cylinder1.png

Wire from the ignition coil, it seems to differ a lot between the pulses to each cylinder:

Spole.png

Spole5.png