1 bad coil?

I was riding the other week and my bike clunked out on me. The main fuse was blown so I replaced it and still no start. Since then I've checked and rechecked all of the wiring and everything looks good. I have a Dyna S ignition system on the bike and ,at the time, Accel Coils. I eventually tested for spark and found none from any of the plugs. I got the coils tested and the shop said one was bad. Is it likely that one coil would go bad while riding as well as blow a fuse and stop the entire engine?

I ordered used coils on ebay and the bike still doesn't spark. I've been at this for weeks and can't figure it out!

Any impute would be great!

Thanks,

Dane

go to dynatek, they have some support info on their products, troubleshooting etc, they can be buggers if you get a bad one, just leaving the key on for a few minutes can blow a coil, sounds like something more than a bad coil, they usually start breaking up when they get hot, sounds like a short to me.

wouldnt still two of the plugs have spark if one coil was bad. and you said no spark on all 4? sounds like it would be something else to me.

Do you have power coming out of the signal generator wires going to the coils? I would start tracing the wires involved in the ignition circuit. A direct short could blow all sorts of components. I would think a short took out the coil and fuse rather than the coil failing, especially while riding it. Time to pull out the meter and test light to find out the source of the problems.

Here's an idea of where to check for battery voltage.

For example, a faulty clip on either end of the fuse could prevent continuity through a good fuse.

Would also refer to the wiring diagram in the filebase for the specific year and model at hand.



Good Fortune!

Thanks everyone for the help!

There is the right amount of voltage (around 9V when starting) to both of the positive coil leads and the negative wires coming from the Dyna S plate aren't showing any voltage.

I've checked almost every wire on the bike, making sure nothing is unintentionally grounding out. If all of the connections seem to be getting the right voltage from the battery all the way to the coils/ignition system, and I'm still getting no spark, could I narrow the problem to either the coils or the Dyna S itself?


The Dyna S and coils were put on the bike by a previous owner. He cut the green and the solid black wires coming from the igniter but tapped the red wire (the one getting power directly from the engine stop switch)going to the Igniter as a power source for the ignition system. I was told by the helpful Dynatek folks that this isn't the best wire to tap. Is there a better wire to tap into?

Part of my problem could be that I have kept the ignition on (key on) too long since I've been working on the bike and that is creating issues.

You guys are awesome! Thanks again for the help.

Dane

Btw you learn a lot if you tear your bike apart and are willing to end up empty handed at the end of the day...

go to dynaonline.com then scroll down towards bottom of page on the left it will say support click on that then a box will appear choose your system then hit look up and choose your model and it will bring up a wiring diagram.

Powerstroke,

I have the wiring diagram and troubleshooting PDF. The Dyna is hooked up properly. I have to learn Dyna's language to understand their troubleshooting guide... Thanks!