Dragging / Surging 2003 FLSTFI

Discussion in 'Engine, Fuel and Exhaust' started by R.Bingham, Nov 23, 2009.

  1. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    I seem to be having a problem with my scoot. It feels like it is dragging and or surging while at a constant RPM. I tried the WD-40 thing on the intake manifold but I didn't notice any change in RPM. So I don't think that there is a vacuum leak there.
    When I'm cruising along say at 45mph I can feel a distinct drag / surge that almost feels like its jerking slightly. If I pull in the clutch it stops so I know that its not brake or wheel bearing related.
    It has stage 1 air cleaner, screaming eagle 16ga. double barrel exhaust, stage 1 download and 34,000 miles. It has had these mods since day one and is other wise stock.
    Any ideas?
     
  2. Drumrguy

    Drumrguy Account Removed

    573
    0
    0
    Is it fuel injected?
     
  3. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    Yes, its fuel injected and has stage 1 download.
     
  4. Hoople

    Hoople Account Removed

    7,198
    0
    34
    It had been running fine & then started surging. No mods or changes,,, just started running bad?
    How is the idle?
     
  5. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    Yes it just started running bad. I forgot to add that yesterday I was riding it once again at a steady speed and it cut out for a moment, then went back to the same thing. There have no other mods or changes to blame.
     
  6. Drumrguy

    Drumrguy Account Removed

    573
    0
    0
    Sounds to me like a fuel problem. Whether it is a clogged filter or injector, but it sounds like a problem in the fuel system somewhere.
     
  7. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    That sounds about right because it doesn't sound like it is miss firing when I'm riding. However I also notice that when I come to a stop it is idling at a lower rpm than it normally does. Then it goes back up to normal idle speed.
     
  8. Drumrguy

    Drumrguy Account Removed

    573
    0
    0
    How does it idle when you first start it up?
     
  9. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    It also is harder to start than normal. It use to start right up and now it has to crank over quite a bit before it starts.
     
  10. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    It idles normal at start up, however it takes longer to start when cold than normal.