The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > EFI Sportster Motorcycle Talk (2007 and up)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

EFI Sportster Motorcycle Talk (2007 and up) For 2007 and above Sportsters

Active Threads
0 The Strociek Project
Last Post: needspeed
Posted On: 36 Minutes Ago
Replies: 73
Views: 5,137
0 Looking for community help/steering/front end issues
Last Post: tkvalentine
Posted On: 1 Hour Ago
Replies: 6
Views: 197
0 Crankcase drain
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 1
Views: 46
0 a definitive sportster chain conversion pros and cons list
Last Post: Tomcatt
Posted On: 1 Hour Ago
Replies: 31
Views: 1,582
0 71 XLH Value?
Last Post: Hippysmack
Posted On: 1 Hour Ago
Replies: 61
Views: 2,254
5 Thunderstorm pistons in xl??
Last Post: Tomcatt
Posted On: 2 Hours Ago
Replies: 2
Views: 109
0 sportster revival
Last Post: brucstoudt
Posted On: 3 Hours Ago
Replies: 12
Views: 440
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Fivecats
Posted On: 3 Hours Ago
Replies: 52,579
Views: 8,876,003
0 Q cams in 73 xlh ??
Last Post: 73HEAD
Posted On: 3 Hours Ago
Replies: 82
Views: 5,717
0 Trouble removing old license plate
Last Post: rejeanprimeau
Posted On: 4 Hours Ago
Replies: 7
Views: 568
0 Snippets
Last Post: BKB
Posted On: 5 Hours Ago
Replies: 535
Views: 74,981
0 Keep & Kill
Last Post: Crusty
Posted On: 6 Hours Ago
Replies: 25,652
Views: 1,501,911
0 Posting Pics
Last Post: BigAl57
Posted On: 6 Hours Ago
Replies: 16
Views: 6,500
7 2001 xlh 1200 off road
Last Post: Warlock
Posted On: 10 Hours Ago
Replies: 5
Views: 1,155
0 Hot Rods, Rat Rods, and Customs.
Last Post: Graywolf
Posted On: 11 Hours Ago
Replies: 4,826
Views: 962,757
0 Allegheny National Park III
Last Post: BKB
Posted On: 12 Hours Ago
Replies: 51
Views: 1,599
0 Hello From Brighton, England
Last Post: ChinCactus
Posted On: 13 Hours Ago
Replies: 10
Views: 118
9 Very long pullback handlebars required
Last Post: Elzer0
Posted On: 14 Hours Ago
Replies: 15
Views: 1,378
0 Japanese Cush Drive!!
Last Post: SonWon
Posted On: 14 Hours Ago
Replies: 49
Views: 17,547
0 Hottie of the day, no nudity.
Last Post: cal43
Posted On: 16 Hours Ago
Replies: 33,159
Views: 3,916,814
0 video & pics
Last Post: cal43
Posted On: 16 Hours Ago
Replies: 598
Views: 64,161
0 This is gonna hurt.
Last Post: cal43
Posted On: 17 Hours Ago
Replies: 9,094
Views: 2,134,019
0 Hot Chicks on Hot Bikes
Last Post: cal43
Posted On: 18 Hours Ago
Replies: 12,619
Views: 2,996,415
0 Electrical Harness Replacemet vs. Self Rewire
Last Post: IXL2Relax
Posted On: 23 Hours Ago
Replies: 31
Views: 8,239
0 04 Sportster refurb and build.
Last Post: sportsterpaul
Posted On: 23 Hours Ago
Replies: 39
Views: 2,945
0 never mind
Last Post: IXL2Relax
Posted On: 23 Hours Ago
Replies: 303
Views: 58,827
0 Canadian Purchases
Last Post: XL Ed
Posted On: 1 Day Ago
Replies: 22
Views: 4,015
0 best set up for ease of kick starting
Last Post: Ferrous Head
Posted On: 1 Day Ago
Replies: 4
Views: 402
0 2007 Sportster 883 won’t start; no turn signals
Last Post: IXL2Relax
Posted On: 1 Day Ago
Replies: 9
Views: 337
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #1  
Old 29th September 2021
n05stang n05stang is offline
Biker
 
Join Date: Sep 2021
Posts: 7
Sportster/Buell Model: 1200
Sportster/Buell Year: 2014
Reputation: 10
n05stang is an unknown quantity at this point
Default Sportster 1200 missing

So I recently picked up a 2014 sportster 1200 within the last month. I have this very strange misfire when cruising at steady rpm. It will ride relatively normal and then you can feel a bit of a hiccup. I have adjusted the primary chain thinking maybe some excess slack was the cause, changed plugs. Noticed it was a bit lean so I bought the vied for it. However the problem is still there. It does stock intake but I do have cat deletes but stock header pipe and still resonated. I don’t know where else to look. I’m going to change wires and plugs again but is there anything I should look for specifically?
Reply With Quote
  #2  
Old 29th September 2021
Andy56 Andy56 is offline
Harley Engineer
 
Join Date: Jan 2019
Location: UK
Posts: 303
Sportster/Buell Model: XL1200T
Sportster/Buell Year: 2017
Reputation: 126445
Andy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud ofAndy56 has much to be proud of
Default

It could be fuel.

It could be dirt in the fuel.

A blockage in the fuel filter.

Maybe inconsistent fuel pressure from pump.
Reply With Quote
  #3  
Old 29th September 2021
n05stang n05stang is offline
Biker
 
Join Date: Sep 2021
Posts: 7
Sportster/Buell Model: 1200
Sportster/Buell Year: 2014
Reputation: 10
n05stang is an unknown quantity at this point
Default

Ran through several tanks of 93 but maybe ill change the filter. Might as well but less than 12k miles
Reply With Quote
  #4  
Old 29th September 2021
XL Ed's Avatar
XL Ed XL Ed is offline
XL FORUM TEAM MEMBER
 
Join Date: Dec 2009
Posts: 2,067
Sportster/Buell Model: XL1200R
Sportster/Buell Year: 2004
Reputation: 2955847
XL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond reputeXL Ed has a reputation beyond repute
Default

What RPM range does this happen?
Reply With Quote
  #5  
Old 29th September 2021
n05stang n05stang is offline
Biker
 
Join Date: Sep 2021
Posts: 7
Sportster/Buell Model: 1200
Sportster/Buell Year: 2014
Reputation: 10
n05stang is an unknown quantity at this point
Default

It pretty much happens at any rpm range but only if I maintain steady rpm. If I accelerate it’s fine or decel it’s fine.
Reply With Quote
  #6  
Old 29th September 2021
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 2,490
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R9T
Other Motorcycle Year: 2015
Reputation: 3105395
Tomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond repute
Default

Quote:
Originally Posted by n05stang View Post
Ran through several tanks of 93 but maybe ill change the filter.
If it runs out well at full throttle the filter isn't the problem.

Are the VIED's adjustable? If they adjust, try richening it up more.

The biggest problem is the emissions oriented tuning. Lean part throttle mixtures and very little part throttle cruise ignition timing. It's unfortunate you spent money on the VIED's, PowerVision is the (much) better fix.
__________________
2017 XL1200C in SE Wisconsin, USA
Reply With Quote
  #7  
Old 29th September 2021
wtwolf's Avatar
wtwolf wtwolf is offline
Biker
 
Join Date: Oct 2011
Posts: 79
Sportster/Buell Model: sportster
Sportster/Buell Year: 2001
Reputation: 41284
wtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to beholdwtwolf is a splendid one to behold
Default

you might check you vacuum lines
Reply With Quote
  #8  
Old 29th September 2021
n05stang n05stang is offline
Biker
 
Join Date: Sep 2021
Posts: 7
Sportster/Buell Model: 1200
Sportster/Buell Year: 2014
Reputation: 10
n05stang is an unknown quantity at this point
Default

I sprayed the intake with carb cleaner no change in rpm so I don’t think I have an intake leak. Maybe I’ll just get powervision. I only have a mac computer though.
Reply With Quote
  #9  
Old 29th September 2021
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 2,490
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R9T
Other Motorcycle Year: 2015
Reputation: 3105395
Tomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond repute
Default

Quote:
Originally Posted by n05stang View Post
Maybe I’ll just get powervision. I only have a mac computer though.
That's a problem. Powervision runs in Windows. I run Powervision (WinPV) in an old IBM laptop running XP Pro. To run DynoJet Power Core to graph data logs you need at least Win 7. Lotsa cheap used Laptops running Win 7, just get one new enough to have a dual core processor.

I know I was amazed at how crappy my '17 1200C ran stock (I bough it new) at part throttle under 3,000 rpm. What you describe sounds pretty familiar.
Reply With Quote
  #10  
Old 29th September 2021
n05stang n05stang is offline
Biker
 
Join Date: Sep 2021
Posts: 7
Sportster/Buell Model: 1200
Sportster/Buell Year: 2014
Reputation: 10
n05stang is an unknown quantity at this point
Default

I’m just upset because everyone said how great these vied were and no matter how rich I make it doesn’t get rid of this issue and if I go above 75 percent the bike just runs terrible.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 03:04.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC