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Steve Wagner

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About Steve Wagner

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    TT Newbie

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  • Location
    Canada
  1. Steve Wagner

    XR100R 1985 no fire

    When the cam chain sprocket loosened it resulted in the woodruff key getting sheared and messed the timing. Got a new key and learned the hard way I need to torque the flywheel nut before I ride the bike, sheared the damn key again. Before it sheared the key it was running well but does feel like the clutch slips. Revs up but power stops making it to the rear wheel. Woodruff, clutch, fork seals, steering head bearings and rear shock bearing and she should be good to go.
  2. Steve Wagner

    XR100R 1985 no fire

    I think it is 130-58. I do need to fine tune the timing. When I got it going it started clicking under the valve cover. Shut it down and removed the cover to find the cam chain sprocket had loosened. Tightened the sprocket but now I think cam chain is loose. Didn’t have time to investigate further but will have to look at before starting up again
  3. Steve Wagner

    XR100R 1985 no fire

    F130 is stamped on flywheel. Installed a new aftermarket carb on it, and switched spark plug cap to a resister cap and she runs!! Idles ok but at full throttle it wants to stall and backfire and lose power. So some fine tuning to be done there. Thanks again to everyone’s help. I’m sure as I get deeper into this project I will have many more questions
  4. Steve Wagner

    XR100R 1985 no fire

    No backfiring. I think advance moves smoothly, nothing to compare it to. I can easily move it by hand and it springs back. How does one check for crank slippage?
  5. Steve Wagner

    XR100R 1985 no fire

    I messed around with moving the point where the points open but nothing as drastic as that. I will have to give it a go. It got me thinking- this bike was a total mess when I bought it so maybe the flywheel is from another bike that had the timing mark on the case in a different spot; or something outside the box like that. Shoot me any crazy ideas like that if u got them
  6. Steve Wagner

    XR100R 1985 no fire

    Did a simple leak down test today- no gauges just air in cylinder on listened. Heard just slight leakage at oil filler. Did another compression test and got 135psi. Started thinking about plug and cap. There was some discussion somewhere about plugs and caps, resister type or not. I believe the cap that came with bike was nonresister type but the plug is resister style.I swapped to a resister type plug cap and was able to fire the engine a number of times with carb cleaner in the intake. Yippee the first bit of progress in couple of weeks.
  7. Steve Wagner

    XR100R 1985 no fire

    Does anyone have a link to 1985 XR100r service manual. I’m normally able to locate just about any manual for any bike online. Even found the manual for later cdi versions of the xr but not the points version. It’s strange considering they must have built thousands of these bikes.
  8. Steve Wagner

    XR100R 1985 no fire

    I’m not dismissing the carb, I just haven’t got to that point. When troubleshooting a bike it’s common to remove the carb and drop bit of gas direct in cylinder to see if it fires. If it doesn’t fire with the carb removed it definitely won’t fire with it on. So the carb is not an issue in my situation.
  9. Steve Wagner

    XR100R 1985 no fire

    I’m not dismissing the carb, I just haven’t got to that point. When troubleshooting a bike it’s common to remove the carb and drop bit of gas direct in cylinder to see if it fires. If it doesn’t fire with the carb removed it definitely won’t fire with it on. So the carb is not an issue in my situation.
  10. Steve Wagner

    XR100R 1985 no fire

    Anyone know a link for shop or service manual for 1985 Xr100r?
  11. Steve Wagner

    XR100R 1985 no fire

    Ahhh. Thought that 125psi would be ok at least to get it to fire. As for points gap yes it’s within spec and carb is not in the equation- removed just to see if it fires. Is this top end rebuild time then?
  12. Steve Wagner

    XR100R 1985 no fire

    I got a cheap, not well taken care of 1985 XR100R not running condition. I have good spark and compression is 125psi. Valve lash is set at 0.05mm and points open just after the F mark. Drop gas in cylinder kick it over and no fire. Spark plug is correct with proper gap, coils wire and cap test well. Am I missing something?
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