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Old September 23rd, 2021, 10:33 AM   #79
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

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MOTY - 2018, MOTM - Nov '17
Quote:
Originally Posted by jkv45 View Post
Very low battery voltage, by itself, will cause odd running problems as well.
Yeah! After being depleted by starting engine, weak battery won't have enough power to fully fire plugs. Nicer ignition systems adjust dwell (coil charge time) based upon battery-voltage. I doubt this system does that. So one more objective test to gather quantitative data

4. measure battery-voltage at idle.

5. measure battery-voltage at 5000rpms.

Those numbers will help narrow down this issue.
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