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  • No Start without charger

    Rode the bike yesterday. Parked it.
    Today when I went to start it, turned the key, hit the start button, bike turned over a few and then all power was lost.
    No displays in the cockpit at all.
    Checked the battery and was showing 13v
    Put bike on a charger, displays came on, but as soon as I hit the starter button it went dead again.
    I placed it on the chart again, this time instead of electronic start I kick started it and it started.
    Ran for a about 30 sec and then turned off.
    Checked fuses on Right side of the bike and all appears good.
    Any ideas on where to start the troubleshooting?
    Thank you all in advance
    ‘79 standard
    2017 CRF 250 Rally
    1979 XS 1100
    1985 Porsche 944
    1991 Alfa 164

  • #2
    I would check the ignition switch connector in the headlight bucket for corrosion/melting. It will have 3 wires (78-79) red, brown and blue.

    If you have the old type glass fuses still, they can make poor contact, the clips get weak.
    2H7 (78)
    2H7 (79)
    3H3

    Comment


    • #3
      If you don't find the problem easily, I would load test the battery or substitute another battery.

      You could also attach jumper cables to a car or truck.

      I have had batteries fail with similar symptoms.
      Last edited by Radioguylogs; 05-01-2022, 08:40 PM.
      -Mike
      _________
      '79 XS1100SF 20k miles
      '80 XS1100SG 42k miles
      '81 XS1100H Venturer 35k miles
      '79 XS750SF 20k miles
      '85 Honda V65 Magna ~7k miles
      '84 Honda V65 Magna 48k miles (parts bike)
      '86 Yamaha VMAX 7k miles

      Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

      Comment


      • #4
        As Mike said, this bike won’t run or start with a weak battery. Do what he said first. Load test the battery. If that passes then start by checking battery current to the alternator.
        Marty (in Mississippi)
        XS1100SG
        XS650SK

        Comment


        • #5
          Did you verify the battery connections are tight? A little loose and this will happen. Also when it won't start, check the voltages on the fuses, including the main, and make sure you have the same as battery voltage. If the resistor is still on the bike, when you turn on the key and the run switch is on, if I recall correctly, you should also have battery voltage at the resistor.
          Owned by a pair of XS11's. An 80 Standard and a 79 Special.

          Comment


          • #6
            If it does not crank at all but the lights on the gauges work, check the connection under the tank that goes to the starter. Mine worked loose and it worked one day but not the next.
            1980 XS1100 SG
            Inline fuel filters
            New wires in old coils-outer spark plugs
            160 mph speedometer mod
            Kerker Exhaust
            xschop K & N air filter setup
            Dynojet Recalibration kit
            1999 Kawasaki ZRX1100
            1997 Jeep Cherokee 4.5"lift installed

            Comment


            • #7
              Also check grounds as you will be surprised how much corrosion can get in there.
              1980 XS1100 SG
              Inline fuel filters
              New wires in old coils-outer spark plugs
              160 mph speedometer mod
              Kerker Exhaust
              xschop K & N air filter setup
              Dynojet Recalibration kit
              1999 Kawasaki ZRX1100
              1997 Jeep Cherokee 4.5"lift installed

              Comment

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