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Flat spot under 2000 rpm

Discussion in 'XJ Technical Chat' started by BikerBill, Jun 14, 2015.

  1. BikerBill

    BikerBill Member

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    Hi Folks
    My 550 has been running great....carb rebuild, valve settings etc..... but was beginning to not start so good. So following the brilliant "how to" video I set about sorting the problem. Bike now starts first time and runs extremely well......apart from flat spot up to just over 2000 rpm....and sometimes surges at just below that...any ideas?
     
    BikerBill, Jun 14, 2015
    #1
  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Which how to video was this? Many of the videos on Youtube are flat out wrong. Did you get the link for it from here?
     
    k-moe, Jun 14, 2015
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  3. BikerBill

    BikerBill Member

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    No......it was a set of JPEGS showing how to clean the enrichment circuit posted on this forum.
     
    BikerBill, Jun 14, 2015
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  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    OK, good. Did you take off the top hats and inspect the slide diphrams for holes/tears? Did you clean and polish the slides and slide bores?
    Did you do the full Church of Clean?
    Bench synch? Float levels wet set? Running synch? Idle mixture set?
    I just want to get a clear baseline of what was done before walking through troubleshooting.
     
    k-moe, Jun 14, 2015
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  5. BikerBill

    BikerBill Member

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    Yes did everything.......
     
    BikerBill, Jun 14, 2015
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  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    OK. Start by pulling the plugs and give us a picture of them.
     
    k-moe, Jun 14, 2015
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