• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Carb vents

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
After much reading and questioning the local shop, I am still confused about the vent lines for the carbs. My GS is a 1978 1000 with Mikuni carbs. There are ports on carbs 2,3 and 4 and I need to know where the vacuum line for the fuel petcock is attached, and which of the ports are for vent only.

I really enjoy my bike and would appreciate any help with this.

Thanks!!
 
If you are looking downward at the carbs, there should only be one nipple sticking up from the carb boots on the engine side. That is what hooks up to your petcock.
 
On my '78 750, with #1 at the left as you sit on the bike

#1 carb has no vent nipple
#2 carb is vented to atmosphere - the hose runs up and over the air box
#3 carb vent hose goes to the petcock
#4 carb is vented to atmosphere - the hose runs up and over the air box
 
Re: Carb vents

kenfortner said:
After much reading and questioning the local shop, I am still confused about the vent lines for the carbs. My GS is a 1978 1000 with Mikuni carbs. There are ports on carbs 2,3 and 4 and I need to know where the vacuum line for the fuel petcock is attached, and which of the ports are for vent only.

I really enjoy my bike and would appreciate any help with this.

Thanks!!
Click to expand...
#3 nipple supplies vacuum to the petcock.
Be sure the #2 and 4 float bowl venting nipples/hoses are clear and routed under the seat.
If you run pod filters, remove the vent lines and leave the nipples open. This will eliminate fuel starvation with pod filters.
 
You must log in or register to reply here.
Back
Top