• 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.

Does fuel/air adjust screw on 82 GS850 control air or fuel flow??

  • Thread starter Thread starter Gary_t200
  • Start date Start date
G

Gary_t200

Guest
Guys,

I want to be clear on what I am adjusting. I have found some contradictory info in the threads for the adjustment ...if I back the screw out (counterclockwise), am I increasing the fuel flow (making it richer?) or am I increasing the airflow and making it leaner???

Please help me settle this.

Thanks
 
Counter clock wise makes it richer, clock wise leaner. At least on your CV carbs, Vm carbs are opposite on air screw and also have separate fuel screw, just fyi. terrylee
 
I checked the BS32 carb manual on bikecliff site and it shows that an air/fuel "mixture" runs through the pilot port into the throat...there is both air AND fuel entrained in the pilot flow.

So it wasn't clear to me if the "net" effect of increasing the flow through the fuel/air port was to make it leaner overall or richer overall.

So if I screw out (counterclockwise), the net effect is to add more fuel, making it richer? I guess the increased air flow rate sucks in more fuel?
 
I doesnt just add fuel..it adds a premixed MIXTURE of fuel and air that was mixed down in the bowls.
 
Yes, the screw contols a mixture to the low-speed operation. Turning it out (counter-clockwise) will richen the overall mixture, turning it in will lean it.

The factory set them on the lean side to meet with EPA regulations, which caused the bikes to run poorly and took forever to warm up enough to ride. Most of us have found that a setting of 2 to 2 1/2 turns out works quite well, but we start at three turns, to ensure a nicely-rich starting point, then lean it out to where it runs best after the bike is warm.

.
 
Good...I got it now...I opened to 3.5 turns, but I think I should have started by re-oiling my air filter. Last I oiled was last summer and it ran awesome. Then this spring it was running lean and surging a bit...dont know why I didnt go first to the sir filter.

I will oil tonight and then take it for a spin. Bet that fixes me and allows me to screw the pilot back in a bit.

Thanks guys
 
What filter do you have that requires oiling? :-k

No matter, it does not take much oil.

If you put too much oil on the filter, you will choke off the air flow

.
 
Gary_t200 said:
Good...I got it now...I opened to 3.5 turns, but I think I should have started by re-oiling my air filter. Last I oiled was last summer and it ran awesome. Then this spring it was running lean and surging a bit...dont know why I didnt go first to the sir filter.

I will oil tonight and then take it for a spin. Bet that fixes me and allows me to screw the pilot back in a bit.

Thanks guys
Click to expand...

Ummm, did you clean the filter first?
 
Yes. Turns out it was pretty dry so I loaded it up with oil, squeezed it out and now my problem is solved. I should have done the filter right away instead of messing with pilot screws. lesson learned.
 
At 2 1/2 turns out from slightly seated, i go Some backfires, still trying to get it running correctly but.the backfires came after tuning the air screws. Should i turn them back in some?
 
Personally, I would turn them OUT about 1/4 turn.

It amuses me constantly that OLD threads are being resurrected.

.
 
Steve said:
Yes, the screw contols a mixture to the low-speed operation. Turning it out (counter-clockwise) will richen the overall mixture, turning it in will lean it.

The factory set them on the lean side to meet with EPA regulations, which caused the bikes to run poorly and took forever to warm up enough to ride. Most of us have found that a setting of 2 to 2 1/2 turns out works quite well, but we start at three turns, to ensure a nicely-rich starting point, then lean it out to where it runs best after the bike is warm.

.
Click to expand...
Thanks for this!
 
jprice90 said:
ok, thanks Steve. It's ok, it's not that old sir
Click to expand...
Just two weeks shy of a full year. :-\\\

The thread might not be "that" old, but I AM.
tongue.gif


.
 
You must log in or register to reply here.
Back
Top