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17th April 2008
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Biker
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Join Date: Apr 2008
Posts: 3 Sportster/Buell Model: XL1200N Nightster Sportster/Buell Year: 2008
Reputation: 10
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2008 Nightster misfires under load
I've got a new nightster with about 100 miles on it. The first 50 miles it ran great, then it start to feel a little "surgy" in 1st and 2nd gear, felt like an ignition misfire. On the highway at 65mph if I keep it in 4th gear it runs smooth but put it in 5th and it misfires and vibrates very badly. I disabled the rear cylinder (pulled off the plug wire) and there was very little RPM change, disable the front cylinder and the engine will almost stall. I swapped spark plugs from cylinder to cylinder with no change. I'm bringing it back to the dealer tomorrow but would like to know if anyone has experienced this.
Thanks
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17th April 2008
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Senior Chief Know It All
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Join Date: Jul 2007
Location: In the Sticks and Lovin It.
Posts: 834 Sportster/Buell Model: Sportster XL883 Sportster/Buell Year: 2007 Other Motorcycle Model: Ferguson TO-30 Tractor Other Motorcycle Year: 1953
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did you pull the spark plug from the rear and see if you're getting a consistent spark?
__________________
[IMG]http://i263.photobucket.com/albums/ii158/honkytnkmn/Bike/Bikewithmods.jpg[/IMG]
2007 XL883, V&H SSS, Screamin Eagle A/C, PCIII, Chopped Fender, Chopped Cam Cover, Drag bars 6 1/2 Risers.
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17th April 2008
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Biker
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Join Date: Apr 2008
Posts: 3 Sportster/Buell Model: XL1200N Nightster Sportster/Buell Year: 2008
Reputation: 10
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Yes, 1/2 inch
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17th April 2008
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Senior Chief Know It All
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Join Date: Jul 2007
Location: In the Sticks and Lovin It.
Posts: 834 Sportster/Buell Model: Sportster XL883 Sportster/Buell Year: 2007 Other Motorcycle Model: Ferguson TO-30 Tractor Other Motorcycle Year: 1953
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Quote:
Originally Posted by Swilster
Yes, 1/2 inch
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I don't understand, Yes, you are getting a consistent spark?
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17th April 2008
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Senior Chief Know It All 1st Class
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Join Date: Nov 2005
Posts: 1,163 Sportster/Buell Model: KaOtIkEvO 1200ss Sportster/Buell Year: 2000 Sportster/Buell Model #2: xl883/1200SE Sportster/Buell Year #2: 2004 Other Motorcycle Model: **unfinished** Other Motorcycle Year: 2002
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I think he's getting a spark while holding the plug 1/2" from the cylinder
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17th April 2008
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Senior Chief Know It All 1st Class
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Join Date: Nov 2005
Posts: 1,163 Sportster/Buell Model: KaOtIkEvO 1200ss Sportster/Buell Year: 2000 Sportster/Buell Model #2: xl883/1200SE Sportster/Buell Year #2: 2004 Other Motorcycle Model: **unfinished** Other Motorcycle Year: 2002
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but then again WTF do I know???
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17th April 2008
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Senior Chief Know It All
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Join Date: Jul 2007
Location: In the Sticks and Lovin It.
Posts: 834 Sportster/Buell Model: Sportster XL883 Sportster/Buell Year: 2007 Other Motorcycle Model: Ferguson TO-30 Tractor Other Motorcycle Year: 1953
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Quote:
Originally Posted by KaotikEvo
but then again WTF do I know???
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Thats ok, just wasn't sure what he was talking about. I'd just ask the dealer when you get it back what the problem was.
Sounds to me like you may have a faulty fuel pump or Sensor.
Make sure you let us know.
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17th April 2008
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Biker
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Join Date: Apr 2008
Posts: 3 Sportster/Buell Model: XL1200N Nightster Sportster/Buell Year: 2008
Reputation: 10
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I come to this site to ask for help and get a couple smart asses, trying to talk like they actually know they are talking about, I can smell a rookie a mile away. First time and last time at this site, what a joke.
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17th April 2008
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Senior Chief Know It All
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Join Date: Jul 2007
Location: In the Sticks and Lovin It.
Posts: 834 Sportster/Buell Model: Sportster XL883 Sportster/Buell Year: 2007 Other Motorcycle Model: Ferguson TO-30 Tractor Other Motorcycle Year: 1953
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Quote:
Originally Posted by Swilster
I come to this site to ask for help and get a couple smart asses, trying to talk like they actually know they are talking about, I can smell a rookie a mile away. First time and last time at this site, what a joke.
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Sorry, wasn't trying to be a smart ass, just didn't understand your answer.
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17th April 2008
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Riding with Angels
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Join Date: Nov 2004
Location: Taxsonville, Florida
Posts: 2,763 Sportster/Buell Model: XL 1200 C Black & Silver Sportster/Buell Year: 2003
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Quote:
Originally Posted by Swilster
I come to this site to ask for help and get a couple smart asses, trying to talk like they actually know they are talking about, I can smell a rookie a mile away. First time and last time at this site, what a joke.
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Sorry to tell you that won't work here at all
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