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No spark
- Thread starter falcn
- Start date
Welcome!
The pics you posted don't really show anything unusual or alarming. The lid can be removed to see if the contact within should be cleaned. The basic test for the regulator is verifying ~14.5VDC at the battery terminals at 2500rpm. If you need to test further, attached is a section on the charging system that includes the mechanical aspects of the regulator on the 1st page (103) and a series of resistance values for the reg. on pages 106-107
That's the thing I can't run it I can't produce a spark I did however get one tiny one today but that was the only one out of 30 trys today
Ah, well that's a different problem that doesn't involve the regulator or the charging system.
Do ya have a fully charged battery and can you test to see if you have battery voltage at the red/white wire at the ignition coil?
Ok, can you test for continuity of the points wire to battery negative with the points closed (either set) and also no continuity to ground from the points wire terminal with the points open?
Ah again, the points have been replaced by an aftermarket transistor ignition....
Can ya post pics of the pick-ups (under the chrome cover Left side of Cyl Head) and the front of that blue box?
Can ya post pics of the pick-ups (under the chrome cover Left side of Cyl Head) and the front of that blue box?
Well, that looks like it was a Boyer Bransden Ignition with E-Advance, but the trigger rotor is not present? (and the left pickup coil looks perhaps fried too) https://tcbros.com/products/boyer-bransden-micro-power-digital-ignition-system-yamaha-xs650
fully charged lead-acid battery open circuit about 12.7 volts. Under cranking load if the terminal voltage is lower than 11 or so, electronic ignitions tend to drop out. The decimals matter. So does the meter. I often test meters as I like to assume nothing.
Electrical tests generally call for a fully charged battery in good condition.
Electrical tests generally call for a fully charged battery in good condition.
Battery is new and always on a tender when I'm not using it
Condenser isn't used with the Boyer
ok ok so the blue box eliminates the condenser
I'm not real familiar with the Boyer - you can tell because I didn't see the rotor hiding as @GLJ pointed out correctly. Maybe you can revive the thing.
Here's a thread from Tech that discusses original install: https://www.xs650.com/threads/boyer-bransden-ignition-1981-yamaha-xs650-sh.48040/
And better yet; a PDF from Boyer itself that includes wiring instructions (attached)
Here's a thread from Tech that discusses original install: https://www.xs650.com/threads/boyer-bransden-ignition-1981-yamaha-xs650-sh.48040/
And better yet; a PDF from Boyer itself that includes wiring instructions (attached)
Prolly have to sand the contacts down all rusted
