• 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/petcock vacuum hose location

nvr2old

nvr2old

Forum Sage
I apologize if this has been covered before. I did a search and found the answer for a later model set of carbs but couldn't find the answer to the set of stock Mikunis on my '79 GS1000S carbs. I'm looking for where to correctly plug the vacuum hose from the back of the petcock into the carb, and which one. I see three hose nipples on the back of the carbs..is this where the vacuum line attaches? And does it go on the inboard-left carb nipple? Again, forgive me if this is a redundant question, but I need someone in the know to help me out here. This is all that's holding me up from getting this bike back on the road. As it is right now, the bike is starving for fuel, even though plenty is coming through the petcock in the Pri position. I have the vacuum hose plugged into the inboard left carb nipple at the moment, and it's still starving. Just trying to eliminate possibilities at this point, because the bike runs perfect with an outside source of gas just plugged into the main fuel line (w/no vacuum hose). Thanks very much.
 
Last edited:
If you have 3-nipples to attach to on the top of 3 carb bodies, I'm somewhat confused. :confused: To my knowledge it should go on either the #3 carb (for that bike/carb set up) or the #2 for most others. Someone here will confirm this as I've not worked on a 10,000S before.

That thing must pull like a tractor! :p
 
On the '79 vm26 carbs, the vacuum line that attaches to the petcock comes from the #3 carb. And the bigger nipple on the petcock goes to the "T" between carbs 2 & 3.
 
Thanks, tas..according to your description, I have it correct. #3 carb, second from the left. That seemed the logical place because it virtually points to it when the tank is on the bike. The far left carb (#4) doesn't even have a hose nipple on it. What are the other two nipples for on carbs 1 & 2..? When I got the bike there were no hoses what-so-ever on the carbs, so I just ran hoses off the carb nipples like if they were vent tubes down behind the engine with the other carb drain hoses..hmmmm..is that necessary? I did get the bike running correctly again, though. After messing around with it this morning, the center two carbs had slightly sticky floats from sitting for several months after running it the last time.
 
Dave8338 said:
If you have 3-nipples to attach to on the top of 3 carb bodies, I'm somewhat confused. :confused: To my knowledge it should go on either the #3 carb (for that bike/carb set up) or the #2 for most others. Someone here will confirm this as I've not worked on a 10,000S before.

That thing must pull like a tractor! :p
Click to expand...

Ha..just figured out what you were talikng about..one too many zeros in my first post..too funny. I'll fix that.
 
Ahhh..my first Suzuki..still learning. So does that mean that I need to move the hose over one to the second one from the right as compared to the second one from the left that it's now plugged into, or does it make any difference..? Thanks very much for your help.
 
Last edited:
1980 gs1000E vacume hose

1980 gs1000E vacume hose

the vacume hose goes on the no.2 inlet manifold.... it will have a small outlet nipple on the top of the manifold just near the clamp ..... its also in the workshop manual......hope this helps you regards david from kaniva australia
 
Thank you, David. Very appreciated. This S model is waiting to be on the street for the first time in a decade. Can't wait to ride it.
 
So the '79 1000 vacuum hose differs from the '79 850 vacuum hose from the carb to the petcock? Mine is on #3.
 
You must log in or register to reply here.
Back
Top