100% Biker & Trike Magazine Forums

Go Back   100% Biker & Trike Magazine Forums > 100% Biker > The Workshop

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 29-04-2017, 06:33 PM
johno74 johno74 is offline
Chatter Box
 
Join Date: Aug 2004
Posts: 216
Default gsxr carb balancing

If there are any carb balancing gurus i'd appreciate some help please..
95 water cooled gsxr1100 on mikuni BST40 carbs.
Trying to balance them using mercury gauges to try and clear rough running but carb 4 or furthest carb to right as you sit on bike is far off the scale ie past max when the others are equalish around half way(i know that actual figures dont matter so much) but i cant adjust carb one down at all-so much that i undid the balance screw off its thread-fuck...
No idea how far off max carb one is so little point(as far as i can see) in adjusting all to max.
Im sure that they are connected properly-at least as per instructions
Anyone recognise whats happening?
cheers
Reply With Quote
  #2  
Old 30-04-2017, 08:24 AM
Tricky-Dicky Tricky-Dicky is offline
Chat Pimp
 
Join Date: Dec 2016
Location: Norfolk
Posts: 167
Default

I'm no expert, but providing your gauges are accurate ,have you swapped them around to make sure the gauge is not faulty?

i would also run a compression test, things like a burnt valve, tight valve shims etc can cause high vacuum.
Reply With Quote
  #3  
Old 02-05-2017, 07:53 AM
harry's Avatar
harry harry is offline
Techno Guru! He's Good! He Knows Everyfink!
 
Join Date: May 2005
Location: Taunton
Posts: 3,399
Default

I would agree with Tricky Dicky, check every thing else before you start fiddling with carbs.

Its quite rare for undisturbed carbs to go out of balance.

I'd start by swapping the spark plugs around to see if the fault moves with the plug.
__________________
si is does non opportunus vos postulo a maior pango
Reply With Quote
Reply

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. The time now is 05:52 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.