s5n cdi ?

[boocher13]

I finally got my eBay s5n all cleaned up and ready to go. I spent about 20 minutes trying to get her started, only managed to idle once for about 5 seconds. In my elimination process I noticed its putting out a rather weak spark. Did these use an external cdi unit I'm missing? What would cause such weak spark? Surely not the plug itself?

 

[dmb]

sand the rotor magnet and bottom of the coil, make sure the plug wire end is clean, i cut 1/8'' off the wire to get a clean wire to the cap and a new plug. set the coil as close to the rotor as you can. now if you dont think you have a good spark... grab the wire and see.. it wont kill you but it will answer your question. only the s-5gs had a cdi.

 

[boocher13]

Thanks for the tips. I'll try those things later today. I actually got it to start and run today. It idled smoothly but ran rough when I gave it some throttle. I have a carb rebuild kit coming. Even after running about 5 min it wouldn't run without being choked. I had no exhaust hooked to it which I'm sure has some effect. This engine was filthy, caked in dry mud and I drained at least 12 oz of water out of it bbefore I tore it down so I'm happy with the results so far.