Home arrow Forums



Go Back   XS11.com Forums > Idle Talk Forum > XS11/XJ11 Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 10-29-2015, 10:28 PM
mrtkayak mrtkayak is offline
XSive
 
Join Date: Oct 2015
Location: Woodbridge, VA.
Posts: 17
I really need help!

Just bought a 79 xs1100 special.i put new battery,change oil and clean the carb just to find out that the pilot jet has 2 42.5 and the other 2 at 45.totally clean the carb but when idle,maybe a couple of seconds it went up to 4000 rpm.it wont stay on the normal idling.pls need your expertise.

I guessing here: maybe the bigger pilot jet let too much gas on the float ad thats why idle went up all of a sudden and stay at 4000
__________________
79 SF

Last edited by mrtkayak; 10-29-2015 at 10:35 PM. Reason: add more info
Reply With Quote
  #2  
Old 10-30-2015, 02:09 AM
James England's Avatar
James England James England is offline
XS-XJ Super Guru
 
Join Date: Oct 2010
Location: North of England
Posts: 3,039
Quote:
Originally Posted by mrtkayak View Post
Just bought a 79 xs1100 special.i put new battery,change oil and clean the carb just to find out that the pilot jet has 2 42.5 and the other 2 at 45.totally clean the carb but when idle,maybe a couple of seconds it went up to 4000 rpm.it wont stay on the normal idling.pls need your expertise.

I guessing here: maybe the bigger pilot jet let too much gas on the float ad thats why idle went up all of a sudden and stay at 4000
I believe that the two inner cylinders often have different sized jets, although someone will soon respond to you if I'm wrong. I don't think that would cause the revs to go so high and stay there.

You say you cleaned the carbs. How far did you go with it? It's possible that you haven't done it correctly. I've been there myself!
__________________
XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.
Reply With Quote
  #3  
Old 10-30-2015, 05:35 AM
mack mack is offline
XS-XJ Guru
 
Join Date: Sep 2009
Location: Ontario, Canada
Posts: 2,408
Carbs

Your pilots should all be 42.5, The compensation for the inside cylinders is usually done with the emulsion tubes, or main jets. If the carbs are in fact the early style carbs the emulsion tubes should have #266 and 301 stamped into them. The ones with the least amount of holes are for the inside carbs.
Check to see the throttle cable routing is correct and that the butterflys snap all the way closed before you start it. You'll hear an audible click.
I'm sure you know to bench sync the butterflys before installing the carbs right. Failing to do that is the main culpret for hanging idles.
The next biggest issue is having one of the intake boot clamp screws hitting the throttle shaft and holding it open.
And lastly, this is the one you don't want to hear. Remove the carbs again and clean them properly as per the tech tip. "cleaning carbs 101"
__________________
mack
79 XS 1100 SF Special
HERMES
original owner
http://i946.photobucket.com/albums/a...ps6932d5df.jpg

81 XS 1100 LH MNS
SPICA
http://i946.photobucket.com/albums/ad305/mack-055/2.jpg

78 XS 11E
IOTA
https://youtu.be/wB5Jfbp6SUc
https://youtu.be/RaI3WYHSuWA



Have recovery trailer and shop if you breakdown in my area.
Frankford, Ont, Canada
613-398-6186
Reply With Quote
  #4  
Old 10-30-2015, 07:23 AM
trbig's Avatar
trbig trbig is offline
Simply used to just post A LOT!
 
Join Date: Nov 2005
Location: Ada, Oklahoma
Posts: 7,838
While I agree that all the pilots should be the same, a motor that starts revving at idle is generally needing a good carb synch if the cables are all free. A bench synch should get you close to where the bike will start, but you will need a more fine tuned synch after that.
__________________
Try your hardest to be the kind of person your dog thinks you are.

You can live to be 100, as long as you give up everything that would make you want to live to be 100!

Current bikes:
'06 Suzuki DR650
*'82 XJ1100 with the 1179 kit. "Mad Maxim"
'82 XJ1100 Completely stock fixer-upper
'82 XJ1100 Bagger fixer-upper
'82 XJ1100 Motor/frame and lots of boxes of parts
'82 XJ1100 Parts bike
'81 XS1100 Special
'81 YZ250
'80 XS850 Special
'80 XR100
*Crashed/Totalled, still own
Reply With Quote
  #5  
Old 10-30-2015, 09:43 AM
hondakid11's Avatar
hondakid11 hondakid11 is offline
XSive
 
Join Date: Apr 2015
Location: Lockport, N.Y.
Posts: 39
if your valve are too tight, that will cause the engine to idle high as well.
__________________
79 XS1100SF k&n pod filters
emgo shorty mufflers (w/o baffles)
chopped rear
springer seat
led turn signels
led brake light
side mount verticle plate
drag bars.

86 Suzuki Intruder VS700
8" biltwell chumps
chopped rear
nasty twins drag pipes
Reply With Quote
  #6  
Old 10-30-2015, 10:00 AM
mrtkayak mrtkayak is offline
XSive
 
Join Date: Oct 2015
Location: Woodbridge, VA.
Posts: 17
Quote:
Originally Posted by James England View Post
I believe that the two inner cylinders often have different sized jets, although someone will soon respond to you if I'm wrong. I don't think that would cause the revs to go so high and stay there.

You say you cleaned the carbs. How far did you go with it? It's possible that you haven't done it correctly. I've been there myself!
That s what Im thinking too.Took all the main jets, pilot jets, checked the diaphrams (looks ok,no tear or holes ),pin taken out and the floater, discovered that the previous owner repaired one of the post that holds the float, not welded but re-attached by a wire w holes.needle cleaned and check spot and clean every part that i can think off.
__________________
79 SF
Reply With Quote
  #7  
Old 10-30-2015, 10:05 AM
mrtkayak mrtkayak is offline
XSive
 
Join Date: Oct 2015
Location: Woodbridge, VA.
Posts: 17
Quote:
Originally Posted by mack View Post
Your pilots should all be 42.5, The compensation for the inside cylinders is usually done with the emulsion tubes, or main jets. If the carbs are in fact the early style carbs the emulsion tubes should have #266 and 301 stamped into them. The ones with the least amount of holes are for the inside carbs.
Check to see the throttle cable routing is correct and that the butterflys snap all the way closed before you start it. You'll hear an audible click.
I'm sure you know to bench sync the butterflys before installing the carbs right. Failing to do that is the main culpret for hanging idles.
The next biggest issue is having one of the intake boot clamp screws hitting the throttle shaft and holding it open.
And lastly, this is the one you don't want to hear. Remove the carbs again and clean them properly as per the tech tip. "cleaning carbs 101"
Ill double check tonight ,specially the cable and butterflys ,that might be the culprit.if not i have to take down the carbs again.Thanks
__________________
79 SF
Reply With Quote
  #8  
Old 10-30-2015, 10:08 AM
mrtkayak mrtkayak is offline
XSive
 
Join Date: Oct 2015
Location: Woodbridge, VA.
Posts: 17
Quote:
Originally Posted by hondakid11 View Post
if your valve are too tight, that will cause the engine to idle high as well.
Ill make sure that i did the right thing first on the carb before tackling the valves.Too scared to touch this..but thanks all reply are helpful..thanks GUYS!
__________________
79 SF
Reply With Quote
  #9  
Old 10-30-2015, 10:24 AM
motoman motoman is offline
Master of XSology
 
Join Date: Aug 2005
Location: Grand Junction, Colorado
Posts: 8,293
Quote:
Originally Posted by mrtkayak View Post
Ill make sure that i did the right thing first on the carb before tackling the valves.Too scared to touch this..but thanks all reply are helpful..thanks GUYS!
If pilot jets(larger number to center two cyl.(#2/#3) are correct, the slides with the metering rods can easily be removed without pulling carb bank. Just seat and tank removal is all that's needed.
__________________
81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.
Reply With Quote
  #10  
Old 10-30-2015, 10:45 AM
BA80's Avatar
BA80 BA80 is offline
Doctor of XSology
 
Join Date: Oct 2010
Location: Tulsa, Ok
Posts: 9,845
Wrong jets Brant.......pilots should all be the same. Mains are richer on 2 and 3 on a few years.
__________________
Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

The list changes.

Last edited by BA80; 10-30-2015 at 10:48 AM.
Reply With Quote
  #11  
Old 10-30-2015, 11:12 AM
hondakid11's Avatar
hondakid11 hondakid11 is offline
XSive
 
Join Date: Apr 2015
Location: Lockport, N.Y.
Posts: 39
Quote:
Originally Posted by mrtkayak View Post
Ill make sure that i did the right thing first on the carb before tackling the valves.Too scared to touch this..but thanks all reply are helpful..thanks GUYS!
just remember youre going to have to do it sometime or another. its part of the maintenance.

try one size bigger on the pilots. i have to run mine a little rich on the pilots to keep it from over reving.
__________________
79 XS1100SF k&n pod filters
emgo shorty mufflers (w/o baffles)
chopped rear
springer seat
led turn signels
led brake light
side mount verticle plate
drag bars.

86 Suzuki Intruder VS700
8" biltwell chumps
chopped rear
nasty twins drag pipes
Reply With Quote
  #12  
Old 10-30-2015, 01:37 PM
BA80's Avatar
BA80 BA80 is offline
Doctor of XSology
 
Join Date: Oct 2010
Location: Tulsa, Ok
Posts: 9,845
Quote:
Originally Posted by hondakid11 View Post
i have to run mine a little rich on the pilots to keep it from over reving.
Now THAT'S funny, I don't care who you are.
__________________
Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

The list changes.
Reply With Quote
  #13  
Old 10-30-2015, 01:50 PM
hondakid11's Avatar
hondakid11 hondakid11 is offline
XSive
 
Join Date: Apr 2015
Location: Lockport, N.Y.
Posts: 39
hahah i thought so . actually i got mine right where it needs to be with the colortune and she still ran a little hang idle until i did a valve job. then she ran smooth. im running k&n pods and open pipes with 45 pilots and 145 mains.
__________________
79 XS1100SF k&n pod filters
emgo shorty mufflers (w/o baffles)
chopped rear
springer seat
led turn signels
led brake light
side mount verticle plate
drag bars.

86 Suzuki Intruder VS700
8" biltwell chumps
chopped rear
nasty twins drag pipes
Reply With Quote
  #14  
Old 10-30-2015, 01:52 PM
LoHo's Avatar
LoHo LoHo is offline
XS-XJ Guru
 
Join Date: Sep 2002
Location: Fresno, CA
Posts: 1,331
My tiny, specific experience has been that vacuum leak/leaks are the main rev up problems. Make sure the vacuum plugs are sealing and the advance hose and vacuum feeds to the carbs are not cracked.
__________________
"Time is the greatest teacher; unfortunately, it kills all of its students."
Reply With Quote
  #15  
Old 10-30-2015, 02:22 PM
mrtkayak mrtkayak is offline
XSive
 
Join Date: Oct 2015
Location: Woodbridge, VA.
Posts: 17
Quote:
Originally Posted by LoHo View Post
My tiny, specific experience has been that vacuum leak/leaks are the main rev up problems. Make sure the vacuum plugs are sealing and the advance hose and vacuum feeds to the carbs are not cracked.
Well I need to check this too. By the way where and what is a vacuum plugs he he he.I need to get a manual for this bike.Thanks bro!!!
__________________
79 SF
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 -6. The time now is 04:27 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Integrated by BBpixel ©2004-2020, jvbPlugin