Fuel delivery - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 12-12-2015, 09:35 PM Thread Starter
Junior Member
 
Join Date: Dec 2015
Posts: 5
iTrader: (0)
 
Fuel delivery

My wife got me a bike for Christmas! 92 Vulcan 750. Guy we got it from said only problem was the float in the tab corroded into pieces clogging the fuel lines. I took off tank and removed petcock and saw the attached filter was the thing that corroded to pieces. I removed that and cleaned it all up added some has and turned the petcock on on, res, and prm, and no fuel would come out of the petcock. I could successfully blow air through the petcock inlet to outlet but gas wouldn't flow through. Gave up and just put it back on the bike and she about 30 secs of cranking the bike fired up and ran fine. Do these petcocks work off of vacuum? I'm used to just turning petcock on and seeing fuel flow freely. So are these petcocks vacuum activated? Also even when warm bike takes about 30-45 seconds to start then runs fine.
sgp0511 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 12-12-2015, 09:50 PM
FREEBIRDS MC CENTRAL NY
 
OleDirtyDoc's Avatar
 
Join Date: May 2011
Location: Norwich,NY
Posts: 16,027
iTrader: (0)
     
Garage
Send a message via Yahoo to OleDirtyDoc
Welcome to the nucking futhouse. Yes they are vacuum activated,but should start up quicker than that.do you have an agm battery and does it backfire while trying?

ONE RATS ASS GIVEN PER POST
Support your local FREEBIRDS MC
1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
I am a BIKER and i'm proud.FREEBIRDS MC CENTRAL NY

lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
OleDirtyDoc is offline  
post #3 of 5 (permalink) Old 12-12-2015, 10:17 PM Thread Starter
Junior Member
 
Join Date: Dec 2015
Posts: 5
iTrader: (0)
 
not sure what kind of battery I haveand no it does not backfire it sounds like it is not getting fuel but once I press the starter for long enough it fires up and runs just fine idles good and everything
sgp0511 is offline  
 
post #4 of 5 (permalink) Old 12-13-2015, 10:35 AM
Old Fart
 
Knifemaker's Avatar
 
Join Date: Jun 2004
Location: Catawissa, MO
Posts: 11,786
iTrader: (4)
     
Garage
There might be able pieces of crap from the tank inside the fuel lines or in the carbs restricting fuel from filling the carb when you go to start it, but take my that long to start seems wrong.
Are you using the choke? What grade of gas are you using?

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
http://www.flickr.com/photos/knifemaker1954/sets/
Knifemaker is offline  
post #5 of 5 (permalink) Old 12-13-2015, 11:20 AM Thread Starter
Junior Member
 
Join Date: Dec 2015
Posts: 5
iTrader: (0)
 
Yes when cold I choke when warm I don't doesn't matter still take 30-45 secs, will clean out carbs and lines with tune up and see if that helps.
sgp0511 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