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81 GS850GX Battery Drain Problem

  • Thread starter Thread starter Buster-boy
  • Start date Start date
Ok, with the battery fully charged here's the latest numbers -

Engine off - 12.64v
At 5K rpm - 13.98v
Rode 10 minutes and stalled - 12.66 with engine off
Restarted without killing battery
Rode another 10 minutes, went home, turned engine off - 12.64

The numbers are a little low but doesn't look too bad.

I'm also having issues with carburation. Backfires through carb #2. When pulling in the clutch, idle goes to about 3k rpm. When starting out from a dead stop or from turning around in the street I need to play with the clutch a little bit to get going. Not 100% responsive when hitting the throttle, just a slight bogging out but when it opens up it goes like hell. Idle floats between 2500 & 3000 rpm at idle. Those are all indicative of and air leak. My next trick is to find it.

I think that's my stalling issue becasue it stalls when turning around and the r's are low.
 
if your battery is low you wont have enough juice for the coils to produce a good spark. youll have power loss, dim headlight beam and backfiring untill the motor cuts out. im no expert but it sounds like a couple of diff. issues. i would concentrate on the electrical first, without enough juice nothing will run right and trouble shooting the rest will be that much more difficult. good luck buddy.
 
I'll take you guys word for it and buy a new battery tomorrow and we'll see what happens. What's another $50 out the window if this isn't it, right?:lol:
 
Hi,

Did you get your old battery load tested?

It's just that you need a known good fully charged battery to start going through the stator papers and test the rest of the charging system.



Thank you for your indulgence,

BassCliff
 
Not "professionally" load tested, just the 5k rpm test. I read the stator papers a while ago. That's what lead me to changing the stator and r/r. I don't remember the numbers from back then (about a month ago) but I can tell you they were low. This is also why I'm still puzzled as to why I'm getting these numbers now. Something just doesn't make sense.
 
Battery Drain

Battery Drain

Hey guys, I got called out of town for a few days for my job. I'll have to continue this saga next week. Thanks to everyone for throwing in your two cents. I really appreciate everything you've done for me.

Take Care! I'll be back online by Sunday.

Jim
 
I'm Back

I'm Back

Ok guys I'm finally back. Battery drain problem has been solved. I bought a new battery, charged it full and installed it. Now things are good with the electrical system :dancing:, but I have other issues. I'm starting a new thread called 1981 GS850GX Carb Problems.

Thanks for everyone's input on this issue.

Jim C.
 
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