ATOM Diy module

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i used an ST901T in one of my modules works great lots of rpm in my chainsaw so as an alternative it will work in place of D1071
 
Made a module for a buddies saw and for some reason had to switch wires around do I leave the spike protector the same or do I flip it to. Also noticed that it reads a resistance of 3.10 both ways normally diode should only read 1 way.
 
You have a problem some where. The diode out of circuit should read about 20 ohms one way & infinity the other. As an assembled unit mine read 20 ohms one way & 90 ohms the other way.
 
when i hooked module up to saw there was a faint spark when i hooked gnd up did i damage module? and thats why spark is weak and weird readings on diode? the saw runs with wires switched seems like no top end but i do have wrong plug in engine which makes difference
 
also im using a DPDT switch so can switch from points to module with switch 1 way module is in use and points disconnected and with switch other way then points in use and module disconnected the coil is middle pin on switch. if i damaged something on module to make spark weaker what should i change or check on module?
 
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Looks like everything is fine soldered new transistors in same outcome um so for some reason wants to run with wires switched do I leave the diode alone or switch it to? Also the points side is still stronger more rpm then module. I'm thinking timing related this flywheel has tighter gap on magnets
 
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Have you wired the spike protector to the module around the wrong way? Perhaps post pictures of your module.
 
Not that I know off. But some pictures of your module & the chainsaw flywheel & Coil might be of some help.
 
those Nova Modules i dont think have timing resistors what would happen if it was just the switching transistor and the bc337. i have a pic of a blue coil taken apart and those 2 components where only thing inside no caps or resistors
 
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