G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile

Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » 2000 RPM Issue « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Crozon
Posted on Saturday, April 22, 2017 - 05:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

2006 Ulysses, Micron full race system, fitted eight years ago, Kuryakyn Hypercharger recently fitted, new battery and TPS reset done, this week.
Bike fires up and ticks over at a steady 1000RPM. Move off and the bike splutters and coughs through 2000RPM and clears at 3000RPM. From 3-6000RPM runs fantastic.Rear Cylinder exhaust gas hotter than front cylinder and the slight sign of pale blue smoke from rear cylinder but it clears quickly. 20000 miles on the engine.
Where do I start looking?
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Saturday, April 22, 2017 - 11:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Exhaust leak(s).
Top of pagePrevious messageNext messageBottom of page Link to this message

Ocbueller
Posted on Saturday, April 22, 2017 - 05:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Remember issues related to Kuryakyn Hypercharger posted on board from about ten years ago. Check the Knowledge Vault.
SteveH
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Sunday, April 23, 2017 - 01:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Re-read your original post. Maybe some dyno runs to figure it out, post reads like it is loading up at lower rpm's.

You could also call or e-mail Kuryakyn and get their feedback.

Please do post back when solution is found. This site is a very good source for Buell owners.

Cheers.
Top of pagePrevious messageNext messageBottom of page Link to this message

Crozon
Posted on Monday, April 24, 2017 - 06:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Checked exhaust system (Micron built in four parts) no exhaust leaks.
TPS reset done with Texas Instruments all on a laptop. ECM Spyware requires physical alteration of the injector butterfly. Has the TPS been carried out correctly?
Top of pagePrevious messageNext messageBottom of page Link to this message

Akbuell
Posted on Monday, April 24, 2017 - 09:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

- Hypercharger recently fitted -

Since you are in troubleshooting mode, try removing the Hypercharger and going back to whatever bits were there before the modification, and see if the problem goes away. If it does, the Hypercharger is the problem.

It could be that at certain RPM ranges,or more accurately certain airflow velocities through the intake tract, there is a 'harmonic' with the Hypercharger that is affecting engine performance.

Hope this helps, Dave
Top of pagePrevious messageNext messageBottom of page Link to this message

Crozon
Posted on Monday, April 24, 2017 - 01:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Over the coming days I will remove the Hypercharger and reinstall the K+n.
However, the bike was running reasonably well in March when I completed the modifications. This 2000 RPM problem has crept in this month and is getting more disruptive, harder to ride around.
Top of pagePrevious messageNext messageBottom of page Link to this message

Akbuell
Posted on Tuesday, April 25, 2017 - 12:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the K+N does not solve the problem, might do to check for leaking/clogged injectors.

The ign system can most likely be ignored, as running issues would probably be seen across the RPM range.

Leaking/clogged injector(s) could cause issues at lower RPMs that would clear at higher engine speeds as the need for fuel increases, and the injectors fire more frequently and for longer times.

Hope this helps, Dave
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Tuesday, April 25, 2017 - 08:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And don't forget to check/replace the injector o-rings too for air leaks.
Top of pagePrevious messageNext messageBottom of page Link to this message

Crozon
Posted on Thursday, May 18, 2017 - 09:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Fuel injectors sonically cleaned and tested, all good. Fuel pump removed and full of crap so new fuel pump installed. Better but not perfect. next week I will get a TPS done and hopefully that will be it. How do you know if the TPS sensor is not working?
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Thursday, May 18, 2017 - 04:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

TPS is a linear potentiometer. Potentiometer's have a wiper inside them that moves along a variable resistor, changing the resistance that is then sent to the ECM.

TPS can be tested with ECMspy. Or you can get a multimeter with mini-clip ends and attach to the TPS leads. Rotate the throttle from full closed to full open and you should see a linear resistance change without any "dead" spots.

Did you check the o-rings that air seal your injectors?
Top of pagePrevious messageNext messageBottom of page Link to this message

Crozon
Posted on Sunday, June 11, 2017 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

New fuel pump and a TPS reset did the trick. Bike running better than ever and revving cleanly right to the red line. Tick over steady and clean take off from standstill.
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Sunday, June 11, 2017 - 10:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Excellent. Thank you for updating the thread.
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a private posting area. Only registered users and custodians may post messages here.
Password:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration