Mysteriously sudden stall and revival

[He Man]

My ducati decided to take a poop on me while riding.  I was riding for about 45mins in stop and go traffic on a 65 degree night.  The bike suddenly died and I could not restart it.  The starter relay clicked and that's all she wrote.  I tried bump starting it to no avail.  Lights  worked. Horn was dea.

I left it parked on the street and came back the next day. Any idea where to start trouble shooting? ThisThis Hlast ned last week aswellas well

[koko64]

Sounds like you were running a total loss system off the battery with no ingoing/top up charging. Either the battery recovered enough to go later or there is a major cable loose.

Once trucking it back home, charging and load testing the battery and checking the earth leads, connections, alternator and regulator charging ala Howies instructions. Hopefully only a cable has loosened off.
He might pop by.

[Howie]

Koko covered it.  Do pay special attention to the battery leads and ground.  They can develop increased resistance while riding.

[He Man]

That's what I figured initially.  I took the batt out and had it load tested and charged.  The battery was fine and was not low. Im waiting for aa towtruck right now

[He Man]

man, spent 2.5 hrs waiting on the cold streets of Dekalb ave, guy never showed up. I went home with the battery.

the batt was FLAT DEAD this time. Charged her up and should have enough juice to get her home. Ive got a kill switch for all non essential lights so that should help.

Maybe i misdiagnosed last time around. Im going to go through the whole electrosport troubleshoot guide and see what i come up with. damn bike only worked for 1.5 hours on a full batt!

When i rmeoved the batt, all the cables were great. but i still need to check the stator to regulator cables.

[He Man]

Rode the bike home with a freshly charged batt. Traced it down to a bad connector from the stator to the regulator. Pulled it apart, cleaned the contacts and applied some dieelectric grease.


Was getting steady battery 12.4 volts at the battery with the bike turning before.
Now its back up to 13.5 at idle and 13.9-14.1 at revs.

[ducpainter]

Sounds like you fixed it.

[WTSDS]

About 5 years ago I bought an el cheapo battery and was very pleased with myself for being so damm thrifty. It was working brilliantly for a coupla days then I went shopping a few kms away, parked the Monsta and did the shopping biz, came back to the 'bike and hit the start button and got NADA, had to push the 'bike home, grrrr.

I subsequently did a post mortem on the battery and the internal lead connecting strips had burnt out.

Since then I always buy high quality batteries and am happy to pay realistic prices. Maybe that's what is happening with your battery.

The dud battery showed decent voltage on a multimeter but didn't have the grunt when it came to starting up the motor.

[He Man]

About 5 years ago I bought an el cheapo battery and was very pleased with myself for being so damm thrifty. It was working brilliantly for a coupla days then I went shopping a few kms away, parked the Monsta and did the shopping biz, came back to the 'bike and hit the start button and got NADA, had to push the 'bike home, grrrr.

I subsequently did a post mortem on the battery and the internal lead connecting strips had burnt out.

Since then I always buy high quality batteries and am happy to pay realistic prices. Maybe that's what is happening with your battery.

The dud battery showed decent voltage on a multimeter but didn't have the grunt when it came to starting up the motor.

It was the same battery (motocross brand i think, which is a rebranded YUASA batt), it was the connection at the stator to regulator that was shot, therefore the R/R could not throw juice to charge the battery.



But i do know what you are talking about with cheap battieres. Ive tried them all, ebay, autozone brands, none of them even with a fresh charge will have enough CCA to turn my bike over. gotta go with OEM.

Sounds like you fixed it.

[koko64]

Glad you found it K.