• 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.

synch carbs while on bike?

  • Thread starter Thread starter roost
  • Start date Start date
R

roost

Guest
So after a thorough carb cleaning, valve adjustment, o-rings, the bike starts and runs smooth.....at 3,000rpm!...and the idle screw is as low as possible. Thanks to all you GS folks for the tutorials, which were quite helpful.

I realize that I bench synced the carbs incorrectly, started with the sync screw between 2-3, then 1-2, then 4, but i left the butterfly just open a little, which is why I'm assuming it idles at 3,000 rpm.

After running, the number 3 header is cooler than 1,2,4. Obviously I need to re-sync these.

So my question is do I need to buy/build a manometer? Or can i adjust these without a manometer while the carbs are on the bike?

I'm assuming the answer is to vacuum sync. I wish you could rent these manometers...
 
Hi,

For reference:

Synchronize Carburetors
(With the Morgan Carbtune)

Synchronize Carburetors
(bwringer's site)

There is lots of information available on the internet for putting together your own manometer. I like the "4 tubes into one reservoir" style better than the "4 bottle" style. But they can be bulky and messy.

If you put your location in your profile and your bike's model in your sig file, perhaps there's a member near you who can help out.


Thank you for your indulgence,

BassCliff
​
 
If you live in San Antonio, TX I would be happy to loan you mine.

If you live in San Antonio, TX I would be happy to loan you mine.

I feel your pain my friend! $115 for what you think is a onetime use.

I had to bite the bullet and buy one (as per Mr BassCliffs advice) and I have to say it was well worth the cash.

Before and after my rebuild the bike was running really rough ? once I rebuilt the carbs and balanced them ? BOOM! It ran like it just rolled out of the showroom.

A few months later I also ended up using it to diagnose an air leak on carb #3.

And these older bikes always need something fixing ? I foresee me using it again many times.

Either make it, buy it or loan it, but I highly recommend you get one.

Good Luck
 
They can be expensive, but manometers are worth it. Like d19407's offer, If your in San Antonio you can use my set. I'll even help ya do it.
 
You must log in or register to reply here.
Back
Top