Question about 1998 BMW R 1100 GS

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Battery dead I left my motorcycle for a little over a month (with gas stabilizer in it) and got back to find the cycle with starting problems. It wasn't starting after lots of turning over. Well I jumped it with a friend's car and all was well. I went to a couple places and it started up fine afterward, but then it wouldn't start up after leaving the DMV. I got another jump from a lady there, but in my rush to do it I connected the cables in reverse order and absolutely no power came through my bike. All the indicators were off, so I quickly disconected the leads and the indicators came back on but not enough juice to even turn the engine over. A couple of bikers came over and helped me push start it (I had no idea how easy that was or I'd have done it myself) and I made it home fine. Now the battery holds a little charge but not enough to turn the engine over fast enough. After the ride home it seemed like the charging system worked, cause the battery had more juice in it than when I left the DMV, but not enough to start the bike. I push started it and took it out for a long ride today and same thing happened - it had juice in it, but not enough to turn the engine over fast enough for it to catch. Is just my battery fried, or is it probable other parts were damaged too?

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If you don't have a multimeter, get one from Radio Shack or Wal-Mart. Measure the voltage across your battery while the bike is off. Then measure the voltage across the battery while you push the starter. Finally, measure the voltage across the battery with the bike running (if you can get it running). BTW, when jump starting a bike with a car, LEAVE THE CAR OFF.

Posted on Nov 20, 2008

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