Carb tubes - 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 11 (permalink) Old 08-22-2012, 05:23 PM Thread Starter
Junior Member
 
Join Date: Aug 2012
Location: Georgia
Posts: 7
iTrader: (0)
 
Carb tubes

I'm trying to figure out where these two tubes attach to on my 99 Vulcan. I was thinking that this first one would attach under the middle of my gas can.


This second one is so short I can't find anything to attach it to. It's on the right side of my bike. Maybe it was just tucked away somewhere as an air tube of some sort?


Thanks in advance for the help and advice!
Attached Thumbnails
Click image for larger version

Name:	carb1.jpg
Views:	34
Size:	6.9 KB
ID:	4829   Click image for larger version

Name:	carb.jpg
Views:	36
Size:	54.1 KB
ID:	4830  
theidealford is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 08-22-2012, 05:38 PM
Prowling Tiger
 
blazblu82's Avatar
 
Join Date: Apr 2012
Posts: 2,048
iTrader: (4)
 
If your bike is a California model, the gas tank would have 2 vents at the rear. The 1st pic is more than likely the tank vent tube which connects to the rear. As far as I know, nothing connects at the center other than the wiring harness from the fuel gauge sending unit. That other tube looks like the vacuum line for the rear cylinder. It normally goes to the emissions junk at the rear of the engine.

Hope this helps.

I only understand what I don't understand.
blazblu82 is offline  
post #3 of 11 (permalink) Old 08-22-2012, 06:21 PM Thread Starter
Junior Member
 
Join Date: Aug 2012
Location: Georgia
Posts: 7
iTrader: (0)
 
There aren't two vents at the rear... so I don't think it's a California model. Also, the other tube is way too short to connect to anything near the back of the engine... thanks for the input though.

Last edited by theidealford; 08-22-2012 at 08:01 PM.
theidealford is offline  
 
post #4 of 11 (permalink) Old 08-22-2012, 06:45 PM
Senior Member
 
Join Date: Jul 2012
Posts: 384
iTrader: (-3)
 
The line that's on the carb went to an air diverter valve at the rear of the engine.
If the diverter valve is gone from the bike you can take it off and plug that port on the carb, or it's not going to run right, and it will lean out that cylinder and you will get a lot of backfiring.
The other pic is too small for me to make out where it is hooked to, but it looks like a vacuum line of some sort. It looks too small to be a fuel line.
TSmith68 is offline  
post #5 of 11 (permalink) Old 08-22-2012, 07:02 PM
Senior Member
 
kc2dgq's Avatar
 
Join Date: May 2010
Location: New Jersey
Posts: 3,350
iTrader: (13)
 
Garage
use the search function and look up "marbling" or "coaster"

If the valve under the tank is missing just in front of the battery box, then it sounds like the emissions items were partially removed.

The reed valves on the cylinder's might be plugged or replaced with "coasters".
The vacuum hose off the right carb should either be plugged into the valve under the tank (which in turn will have hoses going to each reed valve on the cylinder) or plugged off if the emissions stuff was removed.
kc2dgq is offline  
post #6 of 11 (permalink) Old 08-22-2012, 07:37 PM Thread Starter
Junior Member
 
Join Date: Aug 2012
Location: Georgia
Posts: 7
iTrader: (0)
 
Better view of the first cable. It's attached to the silver thing in front of the battery.
Attached Thumbnails
Click image for larger version

Name:	carb2.jpg
Views:	25
Size:	57.5 KB
ID:	4831  

Last edited by theidealford; 08-22-2012 at 07:41 PM.
theidealford is offline  
post #7 of 11 (permalink) Old 08-22-2012, 07:38 PM Thread Starter
Junior Member
 
Join Date: Aug 2012
Location: Georgia
Posts: 7
iTrader: (0)
 
I attached a better photo a little lower down on the feed.
theidealford is offline  
post #8 of 11 (permalink) Old 08-22-2012, 08:02 PM
Giggity!
 
kanuck69's Avatar
 
Join Date: Jun 2007
Location: Ohio, Zanesville
Posts: 4,307
iTrader: (24)
     
Garage
I'd suggest upgrading you battery while your at it to a MF model.

As for the vent tube, it's definitely part of the emissions but mines been gone for so long I don't remember where it all hooked up.
kanuck69 is offline  
post #9 of 11 (permalink) Old 08-22-2012, 08:20 PM Thread Starter
Junior Member
 
Join Date: Aug 2012
Location: Georgia
Posts: 7
iTrader: (0)
 
This might be a horrible answer... but vacuum tubes don't get attached to anything correct?
theidealford is offline  
post #10 of 11 (permalink) Old 08-22-2012, 08:31 PM
Prowling Tiger
 
blazblu82's Avatar
 
Join Date: Apr 2012
Posts: 2,048
iTrader: (4)
 
Quote:
Originally Posted by theidealford View Post
This might be a horrible answer... but vacuum tubes don't get attached to anything correct?
Yes they do. 1 line works pet cock; the other goes to emission.

I only understand what I don't understand.
blazblu82 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