Attached below is a picture of the oscilloscope waveform with the original coil.

The secondary voltage is only 2.42KV

[Linked Image]

I then installed the NOS coil and the secondary voltage rose to 5.86KV

[Linked Image]

What is really odd is both coils test the same with the multimeter.

After some strenuous pulling of the cord, it backfired and ran up to governed speed.

It will cut 6" tall faster than you can push without missing or backfiring.

However, once the engine is turned off it refuses to start until 30 odd pulls on the starter cord. It then pops back through the air filter and slowly builds up to speed and then runs perfectly.

Is this more of a carby issue or still an ignition problem? Maybe the module?

Also, what is the maximum revs it should run at? It sounds like it is running twice as fast than our Victa Power Torque engine. It definitely leaves the Power Torque for dead!

Last edited by LRT; 21/12/16 05:21 AM.