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Posted: Tue Feb 06, 2007 7:21 am Post subject: 1979 kx750 twin electrical problems
I picked up a 1979 kz 750 twin that I want to make into a bobber. I have a little problem with it running, though. It won't. I have power going into the coil but nothing coming out. I picked up another coil at the salvage yard, they tested it, said it was good. I got home...same problem. Could it simply be another bad coil, or could there be another problem somewhere else??
Thanks!!
Joined: Jan 10, 2006 Posts: 158 Location: Green Oak, MI
Posted: Tue Feb 06, 2007 7:49 am Post subject:
Quote:
Post subject: Sorry...that last post should read KZ 750 twin...not KX. Reply with quote
Sorry about any confusion!! Wink
Just click on the "edit" button on the post above, and you can fix the title...
Well, coils *can* go bad, but it's ulikely that both are bad... although possible...
You have to make sure all the wiring is intact, notably the grounds...
Also, could you explain how you are testing it that makes you think it's dead? Do you know the "secret" that Kaws have coil power via the "run" switch (therefore it must be on, unlike Hondas)?
Joined: Oct 03, 2005 Posts: 1595 Location: Marshall, MI
Posted: Tue Feb 06, 2007 7:56 am Post subject: KZ750 Spark Issues
Sorry about the bad news but... electrical problems are the most difficult to diagnose. I looked up this model and it seems to be a hybrid. In other words, it has contact breaker points but it has a voltage regulator and a rectifier for electronic ignition. Man! Now we have numerous components that could be bad and no good way to check them. Make sure the points are opening about .014" and all connections are good. Good battery. Then you have to start replacing critical components with known good ones. Not an easy or inexpensive task. Owners then have to decide if the machine is worth the expense. Tough call, I have had to tell hundreds of owners this bad news.
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