K75 (93) bucking (fuel issue?) - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Nov 6th, 2012, 9:12 am Thread Starter
Rookie
 
Join Date: Jul 2012
Location: Providence, RI, USA
Posts: 33
K75 (93) bucking (fuel issue?)

Hey All, Many thanks to those who helped me with my spline lube debacle 4k miles ago. Just got home from 1200 mile trip on the tail end of which a new issue is starting to manifest its self:
I've noticed it in multiple gears 3,4 and 5. At highspeed 60-70 and rolling off the throttle on exit ramps.
The bike will buck and lose power momentarily. The feeling that comes to mind is when your tank is running empty and you get the stutter that tells you to switch to reserve.
The K75 doesn't have a reserve and these instances happened with moderate fuel levels. No backfiring, and the longest fit lasts maybe a minute. Bike will hesitate, jump back up to power, slow and jump back up to power. In these bouts I have tried easing off the throttle and opening throttle slightly more. It would seem as though its independent of the throttle although I could be missing an indication. I was really hoping that it had something to do with the cold temperatures outside, however the bike was warm in all situations. Any input is appreciated and let me know if you need further detail.
gullymonster is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old Nov 7th, 2012, 10:56 am
Veteran
 
H96669's Avatar
 
Join Date: Jun 2009
Location: Burton, British Columbia, Canada
Posts: 1,652
Very typical symptoms of vacuum leaks. Could be anywhere in the fuel intake but the fuel pressure regulator does run on Vacuum on them bikes. I think it is time to look at all the rubber bits/hoses.

Benelli 50cc at 14
Yamaha RD 200 at 16
Yamaha RD 350 at 17
Honda CB 750 F at 18
Honda V45 Sabre at 24
BMW K100RS at 27
BMW R100GS at 34
BMW K1200RS at 53
H96669 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Absolutely the most detailed description of the K1200S I've come across... sinc K12/1300S 20 Jul 19th, 2014 10:04 am
Interesting read on returnless type fuel systems JCW K12/1300R/R-Sport 2 May 17th, 2011 2:19 am
K75S Fuel Pump Issue cmonroe11 Other K-Bikes Discussion 16 Sep 12th, 2008 6:22 pm
Fuel vent/overflow (airbox issue) DaveNZ K12/1300R/R-Sport 3 Apr 23rd, 2008 3:56 pm
Troubleshoot fuel issue... tkent02 Other K-Bikes Discussion 6 Oct 6th, 2007 7:48 am

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome