Question about Motorcycles
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Posted on Jan 02, 2017
Hi and welcome to FixYa,
The voltage on the green wire must be pulsating when cranking/starting the bike, not steady. Confirm by similarly testing the voltage on the black wire on the left ignition coil. If the green still reads a constant voltage, then the CDI is faulty; to be more specific, most likely that the switching tansistor inside the CDI that drives the right ignition coil has shorted.
Good luck and thank you for asking FixYa.
Posted on Jul 10, 2009
Find an inductive pickup indicator for spark. Place on distributor cap to see if spark is at coil internal tower. If no spark at internal tower, look at ignition module or pickup coil. Ignition modules are prone to failure on 626's. But if you have spark at tower but not at the wire end, then your rotor is gone.
Posted on Aug 18, 2009
The above site has full diagrams for the whole bike (1971 DT1E), diagr. below from site shows elec. components, hope it assists you.
Posted on Apr 27, 2010
If you have continuity from the coil to the ignitor, the problem lies within the ignitor. The coils function by having a constant battery voltage on the red/black wire (you'll notice that ALL the coils have a red/black wire) - the primary windings in the coil charge up, until the ignitor "grounds" the colored wire (grey and white in the front, orange and yellow in the rear). As the voltage in the primary winding drops, it creates a strong magnetic field - the magnet (laminated iron) in the center of the coil charges the secondary windings, and the very high voltages generated fire the plug. You've already determined that the voltage on the orange wire is higher than the voltage on the yellow wire; that could only be because the orange wire is not being "grounded" on a recurring basis by the ignitor. (You have to remember that the meter you're testing the leads with cannot react to changes in voltage nearly as quickly as they happen; to really "see" what's happening at the coil, you'd need to use an oscilloscope).
Posted on Jul 29, 2010
Testimonial: "Thanks, the problem was the ignitor. I replaced it with a new one, and the bike works fine. Thanks again."
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