Idle is screwey, RPMs high, bike dies... - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 14 (permalink) Old 10-25-2012, 03:36 PM Thread Starter
Tech/Musician/Friendly
 
AudibleCreations's Avatar
 
Join Date: May 2012
Location: Richmond, Va
Posts: 63
iTrader: (0)
 
Garage
Idle is screwey, RPMs high, bike dies...

hello folks,

I've recently had issues with my bike running at high RPMs while Idle-ling. I will adjust the idle before cruising after the bike has warmed up and I'll ride for a mile, stop at a stop sign, and my idle is at 3000 rpms. I'll adjust the ilder back to normal and cruise some more and the rpms at dead stop change. I've had an issue when Im coming to a stop sometimes my idle drops below 1000 and the bike shuts off. At that point I can not restart the bike without squeezing on and off of the vacuum tube from my fuel tap and pressing the start switch.

Can anyone point me in the right direction?

More INFO: 2000 vn750 22,000 miles... I converted my ACCT's to MCCT's the other day and Im sure they are not too loose or too tight. Carbs were rebuilt a couple months ago but the tank was pretty rusty, cleaned that the best I could and I use SeaFoam occasionally.
AudibleCreations is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 10-25-2012, 04:03 PM
Just a regular guy
 
Chris32250's Avatar
 
Join Date: Sep 2011
Location: Jacksonville Beach, Fl
Posts: 833
iTrader: (6)
 
I have that problem occasionally when I have rim Seafoam in more than a few tanks.. usually just running a little helps. To me it sounds like some rust from the tank could be in the carbs or petcock. I would check the petcock first...

"Pain is weakness leaving my mouth! *&%^$ that hurt!"

Promo code for 10% off at leatherup.com..... 55634

===2001 Vn750====
New Chrome agm battery
Ears shaved
Coastered
Sportster pipes
R/R relocated
12v adapter installed
Chris32250 is offline  
post #3 of 14 (permalink) Old 10-25-2012, 04:29 PM
Junior Member
 
Join Date: Oct 2012
Posts: 16
iTrader: (0)
 
idle screwy

try spraying carb cleaner on carb boots, if revs up air leak mine did that and thats how i found it. just a thought
vulcan9896 is offline  
 
post #4 of 14 (permalink) Old 10-25-2012, 04:36 PM
Registered User
 
Join Date: Aug 2011
Location: GreenwoodFrickinLakeNY
Posts: 10,354
iTrader: (8)
   
Also, check the enricher linkage for binding, and lube the idle adjust cable too.



Wolfie is offline  
post #5 of 14 (permalink) Old 10-25-2012, 05:22 PM Thread Starter
Tech/Musician/Friendly
 
AudibleCreations's Avatar
 
Join Date: May 2012
Location: Richmond, Va
Posts: 63
iTrader: (0)
 
Garage
Thanks guys! I'll start with your suggestions and post an update in a day or two.
AudibleCreations is offline  
post #6 of 14 (permalink) Old 10-26-2012, 04:14 PM
Members who have donated towards server costs
 
Gemguy's Avatar
 
Join Date: Jun 2006
Location: Long Island, NY
Posts: 812
iTrader: (1)
 
I had the same issue. when my bike warmed up the idle was erratic and high. It turned out to be the boots that the carbs mount on are made of rubber and they warp. Once that happens air gets in directly to the cylinders bypassing the carb and causing high idle. I think you can check that with smoke from a cigarette or cigar when the bike is idling see if the smoke gets sucked in between the boot and the cylinder.

2003 Wine/Gray VN750 bought in 2005 w/2000 Miles
LED Tail/Brakelight & License Plate Light;Chrome Inspection Sticker Plate ;Battery Charging Quick Plug;Kuryakyn LED Battery Voltmeter;Throttle Rocker Palm Rest;Optronics Driving Lamps;KnifeMaker Floor Boards;Halogen Headlamp Bulb;OEM Engine Guard;Iridium Spark Plugs;OEM Luggage rack;Stebel Air Horn;Handlebar Clock; Handlebar Thermometer; Sealed Battery; Marbled; Leather Grip Covers; Rectangular Mirrors

~VROC~ # 389
Gemguy is offline  
post #7 of 14 (permalink) Old 10-26-2012, 06:29 PM
Registered User
 
Join Date: Aug 2011
Location: GreenwoodFrickinLakeNY
Posts: 10,354
iTrader: (8)
   
Quote:
I think you can check that with smoke from a cigarette or cigar when the bike is idling see if the smoke gets sucked in between the boot and the cylinder.
Yes, you can....you'll see the smoke plume being sucked in....good advice Gemguy !



Wolfie is offline  
post #8 of 14 (permalink) Old 03-09-2013, 10:51 AM Thread Starter
Tech/Musician/Friendly
 
AudibleCreations's Avatar
 
Join Date: May 2012
Location: Richmond, Va
Posts: 63
iTrader: (0)
 
Garage
Wolfie, Im not sure what the enricher linkage is. I tried to find that term in the manual but to no avail. Im competent a quick description is all I need bud!
AudibleCreations is offline  
post #9 of 14 (permalink) Old 03-09-2013, 04:24 PM
Members who have donated towards server costs
 
JM2001's Avatar
 
Join Date: Mar 2011
Location: Rochester, New York
Posts: 1,803
iTrader: (1)
 
Quote:
Originally Posted by AudibleCreations View Post
Wolfie, Im not sure what the enricher linkage is. I tried to find that term in the manual but to no avail. Im competent a quick description is all I need bud!
It's what most people consider the choke. Starting at the " choke lever " below the left mirror, trace the cable back to the carbs. You will see a rail with plungers moving up or down.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
JM2001 is offline  
post #10 of 14 (permalink) Old 03-09-2013, 09:13 PM
Registered User
 
Join Date: Aug 2011
Location: GreenwoodFrickinLakeNY
Posts: 10,354
iTrader: (8)
   
Thanks JM...was busy shovelling all day, lol....



Wolfie is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

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



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