A lot of worms in this can....

[canyncarvr]

...but I'll give it a shot.

Using an ignition spark tester along the lines of a MacTools ET3142 and an OEM style Mopar ECU, what voltage is measured in your spark plug wires at idle? Or, choose an rpm.

A whole lot of things make a difference in that measurement...including what the measurement is made with. I am not looking to get into a discussion about coils, ballasts, or plug wires.

I'm just curious what kind of voltage other folks see in their ignitions.

Thanks.

 

[Murray]

As seen on old Sun scopes, high tension plug wires fire at 15K-40K.

 

[teringer]

a lot of time it depends on your fuel mixture / spark plug gap / as in how fast can the spark jump the plug gap.