Fuel from keyhole in petrol cap - 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 9 (permalink) Old 03-14-2016, 06:15 PM Thread Starter
Member
 
johnoni's Avatar
 
Join Date: Mar 2015
Location: Northern Ireland
Posts: 40
iTrader: (0)
 
Fuel from keyhole in petrol cap

Still got this problem. Only happens when the tank is pretty full. A small amount of fuel comes up through the keyhole.I have taken the petrol cap off and cleaned and blew out vents etc. But it still does it. Would changing out the petrol cap help or is it a bigger problem I need to address. Thanks
johnoni is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 03-14-2016, 08:46 PM
Members who have donated towards server costs
 
Join Date: Nov 2007
Location: Chandler, Arizona
Posts: 3,024
iTrader: (0)
 
It could be that the tank was not venting right, and a previous owner took the cap apart and removed the diaphragm, so it would vent properly. This was a common problem on CA models. When they worked, you would hear a whistling noise after shutting of the engine. But it didn't take ethanol gas long to melt the rubber parts and plug up the vent. Do you know if you have a CA model or not? they were sold all over the country. In fact, during the later years I don't know if they even made any non CA models. If you have 2 fittings on the back end of the tank, under the front of the seat, pull the hoses off and see if that helps. If it does, you probably have a ton (only a slight exaggeration) of emissions crap that needs to be removed.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
VN750Rider/Jerry is offline  
post #3 of 9 (permalink) Old 03-14-2016, 09:24 PM
2000 VN 750 Senior Member
 
Join Date: Sep 2010
Location: Central New Jersey
Posts: 2,494
iTrader: (10)
   
Quote:
Originally Posted by VN750Rider/Jerry View Post
It could be that the tank was not venting right, and a previous owner took the cap apart and removed the diaphragm, so it would vent properly. This was a common problem on CA models. When they worked, you would hear a whistling noise after shutting of the engine. But it didn't take ethanol gas long to melt the rubber parts and plug up the vent. Do you know if you have a CA model or not? they were sold all over the country. In fact, during the later years I don't know if they even made any non CA models. If you have 2 fittings on the back end of the tank, under the front of the seat, pull the hoses off and see if that helps. If it does, you probably have a ton (only a slight exaggeration) of emissions crap that needs to be removed.
I would be strange if he had a CA model there in Ireland, although possible.

and always remember, "Ride until you rot!"
**Really not sure if the Big "C" is back right now
but having to face the fact that this is a lifetime routine
going forward. Five operations done and it still continues.

Tom
Vulcan 2000
New ride: 2009 Victory Vision Arlen Ness Signature Series
4507 miles
Vulcan2000 is offline  
 
post #4 of 9 (permalink) Old 03-15-2016, 05:59 AM Thread Starter
Member
 
johnoni's Avatar
 
Join Date: Mar 2015
Location: Northern Ireland
Posts: 40
iTrader: (0)
 
Yes. I have 2 hoses coming of the bottom of the tank at front of seat. So my question is. How do I get rid of all the emissions crap you have mentioned. Thanks for your replies as it bothers me that fuel comes out here. Worried in case at some point enough comes out and runs down tank and drips onto a hot engine. Should point out as well this only happens when the bike is in motion. Carry a cloth around to clear up the access. lol.

Last edited by johnoni; 03-15-2016 at 06:02 AM.
johnoni is offline  
post #5 of 9 (permalink) Old 03-15-2016, 01:20 PM
1986 VN750
 
thtanner's Avatar
 
Join Date: Nov 2011
Location: Dana Point, CA
Posts: 3,255
iTrader: (8)
 
Garage
Search the site for the marbling procedure. That sorts most of it out in one go.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
thtanner is offline  
post #6 of 9 (permalink) Old 03-15-2016, 01:28 PM
Super Moderator
 
Join Date: Feb 2013
Location: SW Florida
Posts: 2,526
iTrader: (5)
 
and they definately made non california models later in the run.. my 2005 is non california emissions

2005 VN750

Sold 11-27-17
michiganteddybear is offline  
post #7 of 9 (permalink) Old 03-15-2016, 01:36 PM
FREEBIRDS MC CENTRAL NY
 
OleDirtyDoc's Avatar
 
Join Date: May 2011
Location: Norwich,NY
Posts: 16,015
iTrader: (0)
     
Garage
Send a message via Yahoo to OleDirtyDoc
Yes.any bike NOT sold in Nazifornia didn't have the California emission crap.it would not make economic sense for a company to put all that stuff on a model when only one state in the world requires it.they are added on later

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 #8 of 9 (permalink) Old 03-15-2016, 01:41 PM
1986 VN750
 
thtanner's Avatar
 
Join Date: Nov 2011
Location: Dana Point, CA
Posts: 3,255
iTrader: (8)
 
Garage
Quote:
Originally Posted by OleDirtyDoc View Post
Yes.any bike NOT sold in Nazifornia didn't have the California emission crap.it would not make economic sense for a company to put all that stuff on a model when only one state in the world requires it.they are added on later
Actually you will find CA bikes can be found outside of the state exist simply due to excess tanks, and other bits. I've seen CA tanks in the EU, Canada, and other nearby states like AZ (first sold there, not transports from CA).

They exist, albeit not super common. You'll find manufacturers will often use what they have, so if they have an extra 1500 CA tanks (or whole bikes, even), they'll ship them out with those provisions.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350

Last edited by thtanner; 03-15-2016 at 02:04 PM.
thtanner is offline  
post #9 of 9 (permalink) Old 03-15-2016, 02:33 PM
FREEBIRDS MC CENTRAL NY
 
OleDirtyDoc's Avatar
 
Join Date: May 2011
Location: Norwich,NY
Posts: 16,015
iTrader: (0)
     
Garage
Send a message via Yahoo to OleDirtyDoc
But they were produced as a special run FOR California is what I meant by that.

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  
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