New to forum, seeking help with this cursed bike. Former owner had it for 5 years, no spark, could not get it to run. I have it for 2 years and might break the prior owner's record. With a replaced CDI, it fires on one cylinder as long as the opposite coil lead is disconnected. I have replaced pick up coils, stator (out of a KZ305, same engine, identical stator), CDI, right handlebar switch, wire harness, coils, spark plugs, ignition switch, same thing, no spark when both coils are connected. All connectors have been thoroughly cleaned. I can get the one cylinder to fire, but the bike will not start on one cylinder. At this point I can use a little help to figure out this curse.

 

I do not see where both plug wires have been replaced.

Verify that all grounds are good.

Welcome to KF and get some pics of this cursed ride...

 

Thanks for your reply Dragon. I did not test the spark plug wires, as there is strong spark visible on one side when the opposite side coil is disconnected. All the connectors have been squeaky cleaned. I connected all of the grounds I could see in the old and in the new wire harness. One odd thing is that before I replaced the stator, the old CDI was sparking on one side, just like is doing now, but after replacing the stator now it will not spark at all. Connecting the "new" CDI will produce one sided spark, just like it did before I replaced the stator. The only component of the ignition system I have not replaced is the magnetic rotor. I will dig out some pics of the cursed ride. Typically, she looks like a million bucks, with a chin spoiler rigged out of a Honda Interceptor.

 

here are some pics, this is how I found it
<a href="http://s960.photobucket.com/user/fastbread/media/GPZ%20305/008_zps97a5ca06.jpg.html" target="_blank"><img src="http://i960.photobucket.com/albums/ae85/fastbread/GPZ%20305/008_zps97a5ca06.jpg" border="0" alt=" photo 008_zps97a5ca06.jpg"/></a>

brought it home, cleaned it up
<a href="http://s960.photobucket.com/user/fastbread/media/GPZ%20305/WP_0001522_zpsc8ab6b74.jpg.html" target="_blank"><img src="http://i960.photobucket.com/albums/ae85/fastbread/GPZ%20305/WP_0001522_zpsc8ab6b74.jpg" border="0" alt=" photo WP_0001522_zpsc8ab6b74.jpg"/></a>

not convinced on the color, took it apart and refinished it
<a href="http://s960.photobucket.com/user/fastbread/media/GPZ%20305/WP_000183_zpsada38ff7.jpg.html" target="_blank"><img src="http://i960.photobucket.com/albums/ae85/fastbread/GPZ%20305/WP_000183_zpsada38ff7.jpg" border="0" alt=" photo WP_000183_zpsada38ff7.jpg"/></a>

Freshly finished and assembled
<a href="http://s960.photobucket.com/user/fastbread/media/GPZ%20305/WP_000202_zps244a178f.jpg.html" target="_blank"><img src="http://i960.photobucket.com/albums/ae85/fastbread/GPZ%20305/WP_000202_zps244a178f.jpg" border="0" alt=" photo WP_000202_zps244a178f.jpg"/></a>

I will post more pics when I find them.

 

Having the same problem as noted by smoothops above and tried all similar solutions with no luck. love this bike but best when it runs. Any insights would be appreciated. Thanks

 

Sorry to hear that gc, I still have a box of goodies for the 305 if you're interested