2003 919, no performance mods, no PC3, etc. 24,xxx miles, up until today, ran like a champ.
I was riding home in the rain, which is typical, I ride rain or shine. Rode about 8 miles of my 20 mile commute. Rain wasn't terribly hard and was just starting to let up. Suddenly I noticed the engine sputter (I was in 3rd doing about 50ish) and the tach/speedo were bouncing to zero and bouncing back to my current speed/rpm. I got on the throttle and it started sputtering even worse. Speedo/tach dropped to zero and stayed there, FI/OIL/Low Fuel lights all came on and then she stalled out.
I coasted to a stop on the side of the road, turned it off and put it in neutral. Turned the ignition back on, disabled the kill, waited for the FI light to cycle (it did, as normal) and thumbed the starter. Nothing but a very faint buzz from somewhere under the seat.
I took off the seat and checked the fuse box -- everything was good. I found the starter magnetic switch assembly (Number 9 in this fiche drawing
) and checked the fuse there, it was also good.
Pushed the pig (this thing is
heavy!) up a the hill until I was under a dry bridge. Made some calls to find a possible ride/tow all to no avail.
After sitting for about 15 minutes, I gave it another try at starting. It buzzed much louder (from the magnetic switch mentioned above) and sound like it was really trying -- no turning over though, just loud buzzing.
I turned the bike around, hopped on, put it in first, pulled the clutch and got a nice galloping start back down the hill into a sweet wheel-spinning pop-start out in the rain. Rode fine the rest of the way home, although I did keep the tach up a bit a lights.
Now that I'm home, and in the garage, she'll start without issue. I've tried it about 15-20 times now without a single failure.
So what gives? Where do I start troubleshooting? Battery seems strong enough to sit with the headlight on for several minutes and start. Alternator seems strong enough as I had all the electronics following my pop-start...... Any ideas are welcome. This is my first Real Problem with the 9'er, so I'm not even pissed about it, just curious.