K1200S Fuel Tank Venting - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old Jun 5th, 2008, 6:53 pm Thread Starter
 
Join Date: Jun 2008
Posts: 2
K1200S Fuel Tank Venting

I've recently noticed that my K1200S will build up a negative pressure (vacuum) in the fuel tank. In fact, the bike has actually stalled twice, but starts immediately, once the cap has been opened, thereby venting the tank to ambient. This is the second K1200S I've owned, and I don't remember this characteristic before. Is the tank vented to ambient and is a negative pressure normal, or is the vent pluged? I should add that the problem is made worse by having the tank full, which one would expect as the air volume is decreased. Any thoughts?
Mcmullin is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old Jun 5th, 2008, 8:51 pm
JCW
contributor
 
JCW's Avatar
 
Join Date: Aug 2006
Location: Chicago, IL, USA
Posts: 4,827
Check the hose off the top of the tank behind the fuel cap is not pinched. It should end under the bike around the sidestand.
JCW is offline  
post #3 of 5 (permalink) Old Jun 7th, 2008, 2:18 pm Thread Starter
 
Join Date: Jun 2008
Posts: 2
Thanks, I'll check it today.
Mcmullin is offline  
Sponsored Links
Advertisement
 
post #4 of 5 (permalink) Old Jun 9th, 2008, 7:59 pm
Noob
 
Peterh's Avatar
 
Join Date: May 2007
Location: Ann Arbor, MI, USA
Posts: 28
Was the airbox replaced? I had the same symptom (vacuum in the tank) after my shop replaced this part. It turned out that they inadvertently pinched the breather tube from the tank. It is an easy fix, and you should spot the problem as soon as you remove the plastic around the fuel cell. The breather tube runs down the left-hand side, between the battery case and fuel cell.

good luck

Peterh

2005 K1200S (Awsome!)
2002 R1150RT (nearly perfect)
long impatient pause....
1976 Honda CB750K
1972 Yamaha 350 R5-B
1970 Honda CL 350 Scrambler
Peterh is offline  
post #5 of 5 (permalink) Old Jun 10th, 2008, 11:58 am
 
Join Date: Aug 2006
Posts: 187
Yep. Me too. I fixed mine myself by taking the plastic off and moving the tank around until I could free the vent hose. See original link here: http://www.k-bikes.com/forums/showthread.php?t=13696

Dave
DaveNZ is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Absolutely the most detailed description of the K1200S I've come across... sinc K12/1300S 20 Jul 19th, 2014 9:04 am
long story about last years ride KbikeLarry Ride Tales 0 Jun 27th, 2006 10:14 am
Aux fuel tank... on top of tank? MikeyD Bike Talk 6 Apr 25th, 2006 11:06 pm
K1200S fuel line fitting Catatafish Technical, Repair and Maintenance 4 Jan 18th, 2006 6:44 am
Need fuel pump assembly (and tank) to replace '99 unit jims K1200RS/GT (Classic) 2 Jan 11th, 2006 4:29 am

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