I have gone through 3 ignition coils this year. I am using a compu-fire dual fire dual plug ignition. I am lost on what is knocking these coils out. I have verified that the wires and ground are good, the plugs and plug wires are good. Will a bad VOES or ignition timing being off effect the coils? Thanks for any help.

 

Are the coils the correct ohms for the ignition?

 

I used coils that were rated at 3 ohm. My instructions said to use 3 ohm minimum. Should I set it up to 4 or 5 ohm coils?

 

I run a pair of Dynatek 3 ohm on mine with a Dyna S ignition. Timing won't hurt coils, but current will. The only time I have lost coils was from leaving the ignition switch on accidentally for a week or so. Did this two different times over the years and killed coils both times. Now I take the key out of the ignition switch so I know it's off :-) Might want to be sure you don't have voltage going to the coils when it shouldn't be.

 

My Dyna S single fire says not to keep the ignition on more than 5 minutes without starting the bike to not harm the ignition.
Maybe there's something there?

 

I never read the directions