Wilsons Sandbox

I am having an ignition problem, I think. The engine will start when cold and run somewhat normal until it warms up a bit, for maybe 5 minutes. Then it will die and not restart. While cranking it to try to start it, a loud backfire will occur. Let it cool off again and it will restart, run for 30 to 45 seconds and die, backfire, etc. Using the Clymer manual I checked the resistances of the ignition coil, exciter coil, pickup coil and the charging system output, all are OK. I disconnected the CDI unit wiring and tested the resistances and found several open circuits when the table indicates resistance should be present. I ordered a new CDI unit and decided to test the same circuits and found them to be open (infinite) as well. (R and W, 55K ohms) I checked the factory manual and it says to 'refer to the base manual'. Does anyone have the base manual? or has anyone tested a CDI unit successfully? or has anyone run across this type of problem before? [The original problem first appeared at 50MPH in second gear, I was able to limp it off the expressway but had to haul it home in a truck, I checked the carb first and all is well, I definitely think it is electrical, and I believe the Clymer manual contains a testing error. It has just under 2,000 miles on it.] TIA, open to suggestions Larry

>Does anyone have the base manual? or >has anyone tested a CDI unit successfully? or >has anyone run across >this type of problem before?

Speaking of experience with modules in general which includes motorcycle, automotive, outboard motor, small engine, it is not unusual for the manual schematics and test procedures to be less than useful. IMO this is because the module in question may not contain the circuitry which was used for the original design. The explanation offered was that the manufacturer may have contracted an outside vendor to supply a module which would deliver certain outputs in response to specified inputs rather than to contract to supply a specified circuitry. This explanation may or may not be true but certainly fit some applications I have confronted. I have found that proceeding as though this is reality has provided success. That said, it has been my sad experience to find that various good components have been destroyed by connecting to bad ones. For this reason I prefer to proceed as you have done, by testing the peripheral components such as ignition coil, pick-up coil and wiring for resistance before trying a module. Trying a known good module is usually the only way to be sure that the module is the culprit and there is often no better test than to move the suspect module to a good bike to see if the problem follows. HIH Norm [Non-text portions of this message have been removed]

I've done quit a bit of it in my time. Keep the speeds down and know where you are going (or have a great sense of direction). It makes for a real nice experience. The critters you see will be hightailing it out of your way... so the slower the better. As far as cool ones... get "one" almost frozen and pack it in newspaper. When you get to a nice spot to watch the moon and listen to the night sounds...crack it open and enjoy. Give yourself an hour or more so you are not impaired on your way back. West

----- Original Message ----- From: matteeanne@... To: DSN_KLR650@yahoogroups.comDSN_KLR650@yahoogroups.com> Sent: Thursday, June 15, 2006 8:57 PM Subject: [DSN_KLR650] Anyone ever take a late night ride in the deep forest? Being a stupid SOB, I have been seriously considering taking a night ride into the densest parts of the Olympic Forest. I imagine you would see a bunch of critters, quite frankly I think a couple cold ones before the ride would be a lot of fun too (a couple ok). I have been in the swamps on foot at night, night diving in tropical reefs and so on, but have never tried this. Anyone have any experience? Sean Brown International Order of the KLR. "yeh, unto the ride, the thumper, yeh, and it was good, and thine did rejoice" amen matteeanne@... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Archive Quicksearch at: http://www.angelfire.com/ut/moab/klr650 ... earch.html> List sponsored by Dual Sport News at: www.dualsportnews.com List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html> Member Map at: http://www.frappr.com/dsnklr650> Yahoo! Groups Links [Non-text portions of this message have been removed]