• 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.

GS range with Diaphragm petcock

  • Thread starter Thread starter feelergaugephil
  • Start date Start date
F

feelergaugephil

Guest
If the gas is turned to main and not res or prime, if the diaphragm is wore out will it leak into the carbs??
I just got my tank back, fired it up, runs great, but next day my garage smelled badly of gas and looked like #1 air filter area was dripping gas all night, any ideas guys?
I just took it to the local tune up garage that sets up the carbs on bikes, so it should be back in a day or 2, as it ran good but a bit rich.
 
Re: GS range with Diaphragm petcock

feelergaugephil said:
If the gas is turned to main and not res or prime, if the diaphragm is wore out will it leak into the carbs??

Yes, and into the crankcase, too. There are rebuild kits out there.
Click to expand...
 
If the diaphragm is worn, it will leak into the carbs.
To test, install a piece of clear tubing folded back on itself, or run a tube to a jar and let the bike sit overnight as you would normally. Any fuel is a leak.
If it didn't leak, then the fuel that's left in the fuel line and carb passages to the bowls is enough to drain past a poor sealing float valve and flood that carb. You can also check for a leaking float valve by installing a clear fuel line. After turning the bike off, note that the fuel line is full, or maybe has a small bubble in it. If the fuel level drops noticably by morning, you have a leaking float valve.
If the leaking is a valve, you may be lucky and just need to clean up the valve and its seat. Check for any burrs on the sides too. If a ring is worn deep enough around the valves tip (metal or rubber tipped), it's bad. If the valves spring is weak and its full travel is not under spring tension, replace the valve. If you can pull out the little pin more than the spring pushes the pin, the spring is weak.
Sometimes the float seat gasket or o-ring is leaking and allowing the bowl to overfill. It can also be a high float height or sticking or punctured float. Most often the leaking is the valve though.
 
Carbs

Carbs

Well, Keith! Your right again!
Petcock is leaking slowly then when it gets down to the carbs, the float needle is sticking up, hence fuel getting into pistons hence crancases FULL!
So I just ordered new petcock replacement stuff and 4 new needles and seats. so yet again, another few days waiting for snail mail. Thanks again Keith.
Ps! I wont forget to drain out the new oil too!
 
Be sure to measure the float heights after installing the new float valves. Since the carbs will be off, if it's been awhile since the manifold o-rings were replaced, I'd replace them too. Good luck! :)
 
You must log in or register to reply here.
Back
Top