MicroSquirt.com read only forum (Jan.15,2018)

Too short a duration spark will fail to light the mixture, or at least do a poor job of it. You did not say, but I am going to guess that you have a mostly stock motor, and do not have a lot of compression. High compression will cause problems, as it is hard to get the spark to jump the gap with a ...

Thank you for your help! Perfect, that is what I needed to know. As it turns out, it is the blue wire that is +, and that would match a diagram I found on this site, (was if I was looking at the top or bottom of the sensor on the diagram, or if the + and - were placed "in place" etc.
I am cutting ...

First question, does anyone know which wire, (blue or white), is the + wire on a Ford crank trigger sensor? I am going to use that as my VR, and need to know.
Next question, actually 2, is what do PIP and SAW mean? I know they are acronyms, I think SAW has something to do with using the last trigger ...

May be off base here, but any chance the reluctor has the polarity reversed going into the MS??? Perhaps if you switched the wires around it would make a difference?
Tom

Briliant guys.
Though you lost me when I read this

Below 100 kPa, we add 0.3° per 1 kPa drop. So for example, if our total
spark at 100kPa and 4000 rpm was 36°, the advance at 50 kPa would be:
36° + 0.3° x (100-50) = 51°

I dont see how an engine can run 51° under any conditions.
I have ...