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  • #1

    Sudden loss of power

    Hey guys, went to take a ride on my lunch break and run some errands.
    3 or 4 miles down the road I noticed a severe lack of power, especially after shifting into 5th gear. Turned around and headed back to my shop. On the way back I was thinking about any changes since this morning's ride in when the bike ran great. I did hit one sharp bump on the way out at lunch time. Wondering if I should be checking my coils or anything? I did pull the plugs when I got back, number 1 was a bit black but still had a good spark when I checked it.
    Any ideas?
    80 XS1100 SG "Iron Horse"
    Tags: None
  • #2
    Check your pick-up coil wires behind the ignition cover....

    http://www.xs11.com/forum/showthread.php?t=543
    Fast, Cheap, Reliable... Pick any two

    '78E original owner - resto project
    '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
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    Other current bikes:
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    Yep, can't leave nuthin' alone...

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    • #3
      Pickup coils

      If its intermittent missing due to broken pickup coils it would have a dramatic loos of power and low top speed despite Wide Open Throttle. BTDT last year in Durango.

      John
      John is in an anonymous city with an Alamo (N29.519227,W-98.678980)

      Go ahead, click on the bikes - you know you want to...the electrons are ready.
      '81 XS1100H - "Enterprise"
      Bob Jones Custom Navy bike: Tkat brace, EBC floating rotors & SS lines, ROX pivot risers, Geezer rectifier, new 3H3 engine

      "Not all treasure is silver and gold"

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      • #4
        Thanks guys,

        I just took her for a spin and she ran great???
        80 XS1100 SG "Iron Horse"

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        • #5
          Originally posted by Zeke on Wheels View Post
          Thanks guys,

          I just took her for a spin and she ran great???
          Without you doing anything to it? If so, then it's an intermittent fault that will come back when you least want it to. Have you looked at the pickup wires yet?
          XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

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          • #6
            Originally posted by James England View Post
            Without you doing anything to it? If so, then it's an intermittent fault that will come back when you least want it to. Have you looked at the pickup wires yet?
            Look, as you know James is a bad term pertaining to pic-up coil wires. what James meant to say is take both hands and try to seperate every inch or so. If the insulation stretches like a rubber band.......ya gotta break in there.
            81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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            • #7
              Originally posted by motoman View Post
              Look, as you know James is a bad term pertaining to pic-up coil wires. what James meant to say is take both hands and try to seperate every inch or so. If the insulation stretches like a rubber band.......ya gotta break in there.
              Well, yeah... I didn't mean just look at them! If only we could fix faults by merely looking at them!
              XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

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              • #8
                Some people can, James. My wife has been correcting my faults with just a look for 30 years.

                Yeah, it was a target rich environment....

                Patrick
                The glorious rays of the rising sun exist only to create shadows in which doom may hide.

                XS11F (Incubus, daily rider)
                1969 Yamaha DT1B
                Five other bikes whose names do not begin with "Y"

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                • #9
                  Thanks again fellas!

                  The pick up coils that you are talking about, are they under the seat at the rear of the bike?
                  Never mind, I clicked on the link that was posted above and had a "duh" moment. You didn't say "Ignition Module".
                  Last edited by Zeke on Wheels; 06-28-2012, 05:12 AM. Reason: add comment
                  80 XS1100 SG "Iron Horse"

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                  • #10
                    Thanks so much guys!

                    I took the ignition cover off and did the inspection/repair as directed by this awesomely helpful thread: http://www.xs11.com/forum/showthread.php?t=543

                    And also, the advice on checking for more than one faulty wire was right on the money! I repaired 2 wires and then found no more.

                    Now I am wondering if this is why I got such a great deal on the bike. Maybe it cut out on the previous owner and scared him into selling it. I can't believe that he didn't surf the web and find this great forum!

                    Thanks again, 1000 times!
                    80 XS1100 SG "Iron Horse"

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