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Dyna S ignition issues?

  • Thread starter Thread starter rustynissan
  • Start date Start date
chef1366 said:
He did not ask you to test the resistance of two Dyna S coils? With the magnet on the crank trigger facing away from the one being tested put one lead of your multimeter on the power and one to the ground wire. These is the wires that come off the Dyna S and go directly to the coils.
Use the ohm setting on the meter.
Ask Larry or Raymond for the range.
This is how I found out mine was bad. It would run when cold and then cut out one coil when hot.
Click to expand...

I had this problem with the stock coils first. Then I replaced the coils with new Dynatek greens. I have even swapped the black and white wires to make sure it wasn't a coil (it wasn't). I have also gone through all of the troubleshooting in "Dyna S Ignition System Testing" found at http://www.dynaonline.com/skins/downloads/Default.aspx (this also lists the coil resistance values). Everything seems to check out, save the 2V drop at the coil supply (but Larry says this is really unlikely to be a problem).

Edit: I did not swap the black and white wires. This would never work. :-P

I am 99% certain it is related to the pickups at this point.
 
Last edited:
rustynissan said:
I had this problem with the stock coils first. Then I replaced the coils with new Dynatek greens. I have even swapped the black and white wires to make sure it wasn't a coil (it wasn't). I have also gone through all of the troubleshooting in "Dyna S Ignition System Testing" found at http://www.dynaonline.com/skins/downloads/Default.aspx (this also lists the coil resistance values). Everything seems to check out, save the 2V drop at the coil supply (but Larry says this is really unlikely to be a problem).

I am 99% certain it is related to the pickups at this point.
Click to expand...
I was referring to the coils (or as you refer to as pickups) on the Dyna S and not the green coils.
 
Update:
Over the weekend, I took the Dyna S ignition off and put the points ignition back on. I also wired in a couple 2-ohm resistors in series with the new 3-ohm coils. No real problem so far. I am now sending the Dyna S back to Dynatek for a replacement.
 
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