Page 1 of 2 1 2 LastLast
Results 1 to 15 of 19

Thread: Bike just stopped running 82 R100 RT

  1. #1
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92

    Bike just stopped running 82 R100 RT

    Coming home from work today bike just quit like someone unplugged it. Turns over but no spark. Help please.

    Jim O'Coin

  2. #2
    Administrator 20774's Avatar
    Join Date
    Sep 2005
    Location
    San Antonio, TX
    Posts
    12,898
    Heat sink paste renewal on the ignition module? Any recent maintenance?
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User lmo1131's Avatar
    Join Date
    Jan 2010
    Location
    Pismo Beach, CA
    Posts
    3,007
    Kill switch?
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  4. #4
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92

    No spark

    Have not refreshed IM grease in 20k miles, bought bike with 35k, now has 55k miles. No recent significant service in 2k miles. Not the kill switch, it turns over.

  5. #5
    One big Oaff brewmeister's Avatar
    Join Date
    May 2009
    Location
    central wisconsin along the wisconsin river
    Posts
    316
    howdy!,how are the magnets inside the ignition soup can? glue let loose?
    81 R100RT

  6. #6
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92

    Bean can

    How would i check that? Does it come apart? Electrical check? I get no spark on either cylinder.

  7. #7
    Ray
    Join Date
    Jun 2007
    Location
    portland, or.
    Posts
    83
    Hall sensor? Happened to mine...

  8. #8
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92
    How did you diagnose it?
    Thanks,
    Jim

  9. #9
    Administrator 20774's Avatar
    Join Date
    Sep 2005
    Location
    San Antonio, TX
    Posts
    12,898
    Snowbum has an article on ignitions; a short way down the page, he has something on testing Hall sensors:

    http://bmwmotorcycletech.info/Ignition.htm

    In the Resources and Links thread, there is a section on Hall effect sensors.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  10. #10
    Minnesota Nice! braddog's Avatar
    Join Date
    Jun 2003
    Location
    Twin Cities - MN
    Posts
    1,916
    This could be a lot of things, especially on a 31 year old motorcycle. I've had similar issues. The first one that I had turned out to be the switchgear with the kill switch. But, the symptom there was no lights, no turnover, so yes, as if if kill switch was on.

    The next one was actually within the wiring harness that was causing your exact same symptoms. This was a case where, you could move some wires around and get spark. Examine the wires and you see splices and bodges where previous owner or owners had attempted fixes. Replaced that whole harness, life was good.

    The last one was a little trickier, although again, it involved the starter not engaging. This was a case where a wire got stretched up in the bars from the switchgear. I could short the relay, and the starter would kick, but the button wouldn't work.

    One simple thing you can do is to pull the tank and examine your wires and connections. Make sure they're tight and clean and also make sure you don't have any old corroded or spliced wires.

    Good Luck.
    -----------------------------------------
    Brad D. - Member #105766
    '77 R100RS - Black Beauty (big pipe, baby!)
    '94 R1100RS - Sylvia

  11. #11
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92
    Thanks. I'll check things out over the weekend
    Jim

  12. #12
    One big Oaff brewmeister's Avatar
    Join Date
    May 2009
    Location
    central wisconsin along the wisconsin river
    Posts
    316
    the magnets broke loose and tore up the advance mechanism,i had no spark but it cranked all day,i just pulled the front cover off (After removing the ground strap-never forget to do this step!!) marked and unbolted the can then just took it apart to inspect it.the hard magnets trashed the mechanical advance parts and the plastic magnet holders shattered into a thousand pieces.the shaft that the advance unit runs on was chewed up like a 64th of an inch,not repairable so I replaced it with a motorad electric bean can new and all is now back to normal as a airhead can be.
    81 R100RT

  13. #13
    MonoRT MonoRT's Avatar
    Join Date
    Jun 2011
    Location
    Huntington Beach, CA
    Posts
    80

    Kill Switch Test

    You can eliminate a few components if the bike will pass this test: Pull a sparkplug and seat it firmly in its boot and then ground (firmly!) the body of the plug to the cylinder. With the plug firmly against the cylinder, switch on the ignition and flip the kill switch on and off. Each time the kill switch interrupts power to the ignition, the coil should fire the plug. If you get a nice spark, you know that the kill switch, ignition module, coil, plug wire and plug are OK - or at least they're not in total failure mode. If you don't get a spark, you've got some suspects to check out. If you do get a good spark, the Hall sensor in the bean can becomes a prime suspect.

    Now that I think about it, I can't recall if this test really tells you much about the ingition module - but I think the IM has to pass current to the coil so you'd get at least a partial IM test out of this. Does anyone else remember?

  14. #14
    Registered User
    Join Date
    Dec 2012
    Location
    Gunnison, CO.
    Posts
    20
    My R100 GS did that one day out in the boonies. It was just one of the wires that plug onto the coil that had worked loose and become a bit crudded up. I pulled it off, cleaned it, tightened it a bit and put it back on. Bike fired right up and never gave me another problem. I would check the simple stuff first.

  15. #15
    Registered User
    Join Date
    Aug 2007
    Location
    Somers, CT
    Posts
    92
    I have that happen to me but only one of the coil wires was loose so it was trying to run on one cylinder. This breakdown was nothing like that.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •