For about the last month, I'd noticed the fuel pump sounding "intermittent " when I would turn the key on. But, I couldn't be sure of what I thought I was hearing, due to helmet, earplugs and traffic noise. The bike started fine, so I didn't worry about it.
On Monday, rode to work. No apparent issues. At lunch time, swung a leg over, turned the key, heard the pump sound normal, hit the starter: click.
I put a meter on the battery: 12.7v. (Bike came with the Ctek battery indicator, which I can easily put probes on without having to remove the seat.) I hit the starter again: click. A couple more times and the speedometer light went off. (And at this point, the meter read 11.2v)
No fuses blown.
Got the bike home (thank you, AMA!) and have had it on a trickle charger. Fired it up this morning. Started fine.
Meter readings:
Key off: 12.92v
Key on: 12.37v
During startup: 11.37v
Running at idle: 13.57v - 14.37v
@3000rpm: 14.67v
After switch off: 13.27v
Left it for an hour: came back, metered at 12.92v. Turned key on, lights lit, heard fuel pump (but only after a couple of seconds had elapsed), hit starter, nothing. *But*, I absentmindedly kept my thumb on the starter while wondering what was going on and, after about a second, the bike started.
With key off, I put the meter inline to the battery negative terminal and measured milliamperes: 0.00 - 0.01.
(Doesn't seem like much, right?)
Measuring amps at each fuse, with key off, shows zero.
I did a diode test on the rectifier and I get a consistent 0.5 between 6:1-2-3 and 4:1-2-3. l also get open circuit indication when swapping positive and negative probes.
Continuity probes at the fuse terminals all give a steady tone.
One hour later, keyed on at 12.7v. Hit the starter and got:
- two clicks
- instruments went dark on second click
- meter dropped to 2.4v
- heard a relay toward the back of the bike click (off, I'm guessing?)
20 minutes of trickle charging later, the bike started. So, still stumped.
What else would you do?
I can't ride it anywhere again, till I get this sorted out.
Many thanks!
On Monday, rode to work. No apparent issues. At lunch time, swung a leg over, turned the key, heard the pump sound normal, hit the starter: click.
I put a meter on the battery: 12.7v. (Bike came with the Ctek battery indicator, which I can easily put probes on without having to remove the seat.) I hit the starter again: click. A couple more times and the speedometer light went off. (And at this point, the meter read 11.2v)
No fuses blown.
Got the bike home (thank you, AMA!) and have had it on a trickle charger. Fired it up this morning. Started fine.
Meter readings:
Key off: 12.92v
Key on: 12.37v
During startup: 11.37v
Running at idle: 13.57v - 14.37v
@3000rpm: 14.67v
After switch off: 13.27v
Left it for an hour: came back, metered at 12.92v. Turned key on, lights lit, heard fuel pump (but only after a couple of seconds had elapsed), hit starter, nothing. *But*, I absentmindedly kept my thumb on the starter while wondering what was going on and, after about a second, the bike started.
With key off, I put the meter inline to the battery negative terminal and measured milliamperes: 0.00 - 0.01.
(Doesn't seem like much, right?)
Measuring amps at each fuse, with key off, shows zero.
I did a diode test on the rectifier and I get a consistent 0.5 between 6:1-2-3 and 4:1-2-3. l also get open circuit indication when swapping positive and negative probes.
Continuity probes at the fuse terminals all give a steady tone.
One hour later, keyed on at 12.7v. Hit the starter and got:
- two clicks
- instruments went dark on second click
- meter dropped to 2.4v
- heard a relay toward the back of the bike click (off, I'm guessing?)
20 minutes of trickle charging later, the bike started. So, still stumped.
What else would you do?
I can't ride it anywhere again, till I get this sorted out.
Many thanks!
