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Thread: My R1100Rt died

  1. #1
    OldBMWMaster JDOCKERY132445's Avatar
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    My R1100Rt died

    I was riding home today and it died. I pulled off the road. I restarted it and it ran for a few seconds and died again. This was repeated numerous times. I finally gave up and left it on the side of the road and got a ride to the house from a friendly motorist. I will take my truck and pick it up in the morning.

    Any guesses as to what the problem might be?
    Jerry Dockery
    309 N. 3rd. Ave.
    Kure Beach, NC 28449
    1996 R1100RT main bike & 1985 K100RS...too fast to believe.

  2. #2
    Registered User mneblett's Avatar
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    Assuming your charcoal canister isn't clogged (blocking vent air entering the tank, preventing the fuel pump from being able to draw fuel from the tank -- release of a built-up vacuum in the tank is a sign of a blocked charcoal canister), the next likely thing is a failed HES (Hall Effect Sensor) -- a common oilhead malady.
    Mark Neblett
    Fairfax, VA
    #32806

  3. #3
    IBA #44567 Ken F's Avatar
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    I'd be willing to bet on the HES.....
    IBA #44567
    "Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."
    -Albert Eienstein

  4. #4
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    Rt

    Could be something simple like water in the gas, or a clogged fuel filter. When you turn the key on can you hear the fuel pump start and stop? Jon

  5. #5
    Rally Rat
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    HES, or blown-of line in the fuel tank. My first bet would be the HES. Did the tach go crazy during your start-up attempts? Was it raining? Both of those would point to the HES.

    In any event, replace the HES first. It's a failure waiting to happen in the 1100 series.

  6. #6
    OldBMWMaster JDOCKERY132445's Avatar
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    This morning

    I got an email this morning from a riding buddy who suggested the bad gas I got in Florida might have had so much alcohol in it that it has caused the fuel lines to collapse from the inside. took a friend with me to pick it up this morning and it cranked right up. Ran for about 2 miles and quit.

    I am going to order the new lines, connectors and filter.

    Yes, it was raining; so I will go ahead and replace the sensor just to be safe.

    All this needs to be sorted out quickly; I have riding to do.
    Jerry Dockery
    309 N. 3rd. Ave.
    Kure Beach, NC 28449
    1996 R1100RT main bike & 1985 K100RS...too fast to believe.

  7. #7
    Rally Rat
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    Quote Originally Posted by JDOCKERY132445 View Post
    I got an email this morning from a riding buddy who suggested the bad gas I got in Florida might have had so much alcohol in it that it has caused the fuel lines to collapse from the inside. took a friend with me to pick it up this morning and it cranked right up. Ran for about 2 miles and quit.

    I am going to order the new lines, connectors and filter.

    Yes, it was raining; so I will go ahead and replace the sensor just to be safe.

    All this needs to be sorted out quickly; I have riding to do.
    You can get a HES from EuroMotoElectric http://www.euromotoelectrics.com/BOS...gnsen-r137.htm

  8. #8
    OldBMWMaster JDOCKERY132445's Avatar
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    Thanks

    Quote Originally Posted by JimMoore View Post
    You can get a HES from EuroMotoElectric http://www.euromotoelectrics.com/BOS...gnsen-r137.htm
    I have no idea if mine is bad or not; but just to be sure, I ordered one from a BMW member who had it in the flea market. I think he gave me a great deal.
    Jerry Dockery
    309 N. 3rd. Ave.
    Kure Beach, NC 28449
    1996 R1100RT main bike & 1985 K100RS...too fast to believe.

  9. #9
    OldBMWMaster JDOCKERY132445's Avatar
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    bits of black rubber

    I think my buddy who suggested the gas with the high concentration of alcohol is the culprit. There were bits of black rubber coming out of the fuel lines and more in the tank when I dumped it. I am expecting the rest of my parts today.
    Jerry Dockery
    309 N. 3rd. Ave.
    Kure Beach, NC 28449
    1996 R1100RT main bike & 1985 K100RS...too fast to believe.

  10. #10
    the Wizard of Oz 26667's Avatar
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    slightly related/interesting to me

    Even in my limited experience, I've run across several stories of bad gas in the past three or four years. One of the posited reasons that intrigued me was that because so few people are buying Premium/ High Octane/ what-you-may-call-it gas, the stations tend to let their underground tanks run almost dry before refilling from the truck. The literal bottom of the barrel, along with whatever's settled there is what we're occasionally putting in our machines.

    And here's a weird PS. My friend/indep guru had worked on a guy's airhead. Some routine maint'. The guy left the shop and ret'd a few minutes later complaining that the bike ran poorly as soon as he filled the tank. Tank drained. Fresh gas put in. Bike runs good. Owner still wants $$ back for "bad service."

    What is it w people?

    Hope you get your problem solved easily and hope I haven't hijacked too extremely.
    We might as well walk. ~ Adam Guettel The Light In The Piazza
    used to own: 1982 R100T, 1984 R65, 1986K75C, 1997 R1100RT, R850R, K75S, 1978 R100RS... what was I thinking?

  11. #11
    OldBMWMaster JDOCKERY132445's Avatar
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    Bad pulley

    I completely re-plumbed the fuel tank with new filter and hoses. The U shaped hose that joins the pump to the filter was cracked at the filter connection. Black bits of rubber came out of the filter and from inside all the hoses; they had definitely been harmed by the high alcohol content.

    While I was at it, I decided to replace the alternator belt. This is when I found the problem with the bike turning off; the crank pulley came off in two pieces.

    I thought all the crap pulleys had been discontinued in 9/94; but no way. I got some Permatex metal glue and put it back together. The bike is running well.

    What happens when the two parts of the pulley come unglued, is that the inner piece which sends the signals to the HES, begins to slip and thus stops delivering the signal necessary for the HES to send the spark.

    Don't believe BMW; check your pulley. I was lucky that the problem happened close to home.

    My bike was manufactured in 10/95
    Jerry Dockery
    309 N. 3rd. Ave.
    Kure Beach, NC 28449
    1996 R1100RT main bike & 1985 K100RS...too fast to believe.

  12. #12
    Day Dreaming ... happy wanderer's Avatar
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    Glue?

    I've removed a few pulleys now to change HES sensors and alternator belts and none of them have been glued together. They are two separate parts that fit together with a notch on the pulley and a tab on the rotor. No glue there as far as I've seen. Bolt torque holds it in place.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  13. #13
    Lucky motorradmike's Avatar
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    Yes, those parts are glued together.
    I remember finding that alarming but it's worked for 16 years.
    Mike Marr
    1978 Yamaha XS750 (Needs rings), 1996 BMW R1100RS, 2004 Honda CRF230F

  14. #14
    Registered User
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    BMWs manual calls for a locitite adhesive...Odd bit of bad design- if you're going to glue it you coould just machine a single keyed piece and avoid this type of failure altogether.

  15. #15
    Pepperfool GSAddict's Avatar
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    Yes, the OE manual says adhesive:

    Installing magnetic gate/belt pulley
    ÔÇó
    ÔÇó
    ÔÇó
    ÔÇó
    Install Hall-effect trigger plate (1).
    Install locking device, BMW No. 11 5 640, to
    lock clutch housing.
    Secure rotor (2) of Hall-effect gate to the Po-
    ly-V-belt pulley (3) with, for example, Loctite
    instant adhesive.
    Install the Poly-V belt pulley.
    e Caution:
    Seat retainer for Hall-effect gate rotor (4) in groove
    in crankshaft (5).
    X
    Tightening torque:
    Retaining screw for belt pulley...................... 50 Nm


    Of all the units I've had apart I have never seen this done????
    BMW must have stopped doing it at some point.
    '
    Ufda happens..........

    It's all about the details.

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