flooding back cylinder - 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 13 (permalink) Old 04-22-2011, 12:06 PM Thread Starter
vulcan lover/hater
 
Join Date: Apr 2011
Location: ohio
Posts: 7
iTrader: (0)
 
Unhappy flooding back cylinder

The bike ran perfectly last fall. When I got it out for the winter, reinstalled the tank, put a new diaphragm in the fuel tank valve (as I always do: the ethanol ruins it annually). I tried to start it, it runs for about 30 sec. on the front cylinder while the back cylinder floods: after several seconds begins dripping raw fuel out the first exhaust pipe joint. When I pull the plugs, the back ones are soaked.

Do I need to pull the carb and take it apart? My research has shown me that it is probably either a stuck float (likely) or a bad jet (unlikely: I don't know how a worn jet would cause this level of flooding, especially after running perfectly last fall).

I can't do anything (e.g. carb cleaner in the fuel) that requires the bike to run, because it doesn't run.
Chaz is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 04-22-2011, 03:09 PM
Member
 
bigbluezuk's Avatar
 
Join Date: Nov 2010
Location: Leeds, AL
Posts: 98
iTrader: (0)
 
Quote:
Originally Posted by Chaz View Post
The bike ran perfectly last fall. When I got it out for the winter, reinstalled the tank, put a new diaphragm in the fuel tank valve (as I always do: the ethanol ruins it annually). I tried to start it, it runs for about 30 sec. on the front cylinder while the back cylinder floods: after several seconds begins dripping raw fuel out the first exhaust pipe joint. When I pull the plugs, the back ones are soaked.

Do I need to pull the carb and take it apart? My research has shown me that it is probably either a stuck float (likely) or a bad jet (unlikely: I don't know how a worn jet would cause this level of flooding, especially after running perfectly last fall).

I can't do anything (e.g. carb cleaner in the fuel) that requires the bike to run, because it doesn't run.
Based on the forums info, this is most probably a stuck float.

1995 VN750 - 10K
bigbluezuk is offline  
post #3 of 13 (permalink) Old 04-23-2011, 12:41 AM
Senior Member
 
Join Date: Mar 2005
Location: Channelview, TX
Posts: 748
iTrader: (1)
 
Quote:
Originally Posted by bigbluezuk View Post
Based on the forums info, this is most probably a stuck float.
Agreed

J.D.
Kerrville, TX
'95 Vulcan 750 "Therapy II",
aka "Raggedy Ann"
'95 VN750 project
'03 VN800B "The Little Black"
'04 VN800E Drifter project
'93 VN1500A custom project
VROC #16185
GCVROC #33

Photo album: http://www.flickr.com/photos/leekayd/sets
J.D. is offline  
 
post #4 of 13 (permalink) Old 04-23-2011, 09:06 AM
Heading to the DARKSIDE!
 
BRET H's Avatar
 
Join Date: Sep 2009
Location: Northern Kentucky/Burlington
Posts: 177
iTrader: (0)
 
Hello....I just went through your same ordeal last week.....exact same problem.....The bike ran better than ever on a Tuesday.....that Friday the rear cylinder had raw unburnt fuel flooding the rear cylinder and dripping from the exhaust crush gasket area. I was baffled because my friend and I had just rebuilt the carbs a month and a half before........Turned out to be rear carb float was cracked and full of fuel causing the float to stay on the bottom of the bowl......yours could just be stuck.......mine was cracked.....food for thought.
BRET H is offline  
post #5 of 13 (permalink) Old 04-23-2011, 10:43 AM
Members who have donated towards server costs
 
Join Date: Jun 2010
Posts: 386
iTrader: (5)
 
deleted

1988 VN750[SIGPIC][/SIGPIC]

Last edited by FlacoLove; 03-25-2013 at 08:31 PM.
FlacoLove is offline  
post #6 of 13 (permalink) Old 04-24-2011, 10:34 AM Thread Starter
vulcan lover/hater
 
Join Date: Apr 2011
Location: ohio
Posts: 7
iTrader: (0)
 
Thanks for this idea. Mine is the California emissions model, and just looking at the engine makes me woozy at the thought of removing carbs. But if I have to...
Chaz is offline  
post #7 of 13 (permalink) Old 04-24-2011, 10:35 AM Thread Starter
vulcan lover/hater
 
Join Date: Apr 2011
Location: ohio
Posts: 7
iTrader: (0)
 
Thanks! This forum is the best.
Chaz is offline  
post #8 of 13 (permalink) Old 04-24-2011, 10:48 AM
Heading to the DARKSIDE!
 
BRET H's Avatar
 
Join Date: Sep 2009
Location: Northern Kentucky/Burlington
Posts: 177
iTrader: (0)
 
California Emissions.....and you live in Ohio? Take all that useless crap off of there. working on the bike is a million times easier if you remove all that crap properly and coaster it and do an earshave. Also if you change to aftermarket exhaust and remove the goat's belly tank.....it's amazing how much more stuff you can get to.....not to mention the shedding of all that useless weight!
BRET H is offline  
post #9 of 13 (permalink) Old 04-24-2011, 10:59 AM
Banned
 
Join Date: Jun 2010
Location: Simpsonville, SC
Posts: 1,620
iTrader: (8)
 
Quote:
Originally Posted by BRET H View Post
California Emissions.....and you live in Ohio? Take all that useless crap off of there. working on the bike is a million times easier if you remove all that crap properly and coaster it and do an earshave. Also if you change to aftermarket exhaust and remove the goat's belly tank.....it's amazing how much more stuff you can get to.....not to mention the shedding of all that useless weight!
What he said............best thing I ever did was rip all that junk off the bike.......
dariv is offline  
post #10 of 13 (permalink) Old 04-24-2011, 11:53 AM Thread Starter
vulcan lover/hater
 
Join Date: Apr 2011
Location: ohio
Posts: 7
iTrader: (0)
 
Thanks for the inspiration! It's nice to know that this can be done. Again...thanks!
Problem: I don't know what you mean by "coaster it"; something about the west "coast"? (Remember: my nickname for this site is "geezer"!) What's an "earshave"?

Last edited by Chaz; 04-24-2011 at 11:55 AM.
Chaz is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Tags
flooding , vn 750 carb

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