• 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.

Unbelievable!!..and fuel mixture screw questionin

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

Anonymous

Guest
I'm the original owner of a 1983 gs 850L. I've had it for almost 20 years. After reading a tech article about removing the plugs over the mixture screws, I got curious. Sooo..I did. The 2 inboard carbs (2 and 3) were set at 2 turns out. Fine. That's pretty much acknowleged as being within spec. But I was shocked to find out that the outboard carbs (1 and 4), had the mixture screws all the way seated. It must have come from the factory that way. No wonder it took forever to warm up, and always idled a little funky. I backed them all out 2 1/4 turns, and now I can take it off the choke quicker. Idles better too. So my question is...has anyone else found there mixture screws turned all the way in from the factory? This seems like a shoddy way to lean a bike out to meet emission regs.
 
Cant say that I have even removed any of the plugs yet , but wow what a thing to find after all these years . It does give me a thought with a problem with my wifes bike though
thanks
Dink
 
I bought a 1980 GS1000L in Sept. and tore the carbs down in Oct.
because the inside of the tank was all rusted out.
The factory caps were still on the pilot screws and I drilled them out.
Here's what I found.
#1 out 1 5/8ths
#2 out 3/4ths of a turn
#3 out 3/4 ths of a turn
#4 out 1 5/8ths

Adjusted all to 1 5/8ths
I guess the little jap guy at the factory was having a bad day when
my bike was built, he obviously wasn't paying very close attention.
Peace
Mo
 
It's very common for the inner and outer set to be adjusted (and sometimes jetted) differently. #2 and 3 cylinders run hotter because of less airflow and less surface area to dissipate heat.
Mike
 
GS1197TX said:
It's very common for the inner and outer set to be adjusted (and sometimes jetted) differently. #2 and 3 cylinders run hotter because of less airflow and less surface area to dissipate heat.
Mike
Click to expand...
That makes sense, and I could understand some differences in the settings. But to have 2 of the pilot screws totally seated means 2 out of the 4 carbs were choked off at idle. Seems a bit extreme.
 
When i checked 3 of the 4 (the forth one my buddy stripped) they were set 3 to 4 whole turns out from being seated, maybe that is why it was running rich ( I dont know all this stuff is confusing me) , I heard there is an o ring that sits in that shaft that the needle screws in , is that true oh by the way i have a '81 gs 1100?
 
govprop2000 said:
When i checked 3 of the 4 (the forth one my buddy stripped) they were set 3 to 4 whole turns out from being seated, maybe that is why it was running rich ( I dont know all this stuff is confusing me) , I heard there is an o ring that sits in that shaft that the needle screws in , is that true oh by the way i have a '81 gs 1100?
Click to expand...
Most CV carbs run best at 2 to 2 1/2 turns out from seated. Anything over 3 turns out would usually be on the rich side. The screws effect idle to about 1/8 throttle.
 
Not real weird. On my 01 Rauder the front cylinder was at 3/4 and the rear was fully seated. Both are on 1 and 1/4 after rejetting and such. :D Suzuki must still continue the practice. :oops:
 
You must log in or register to reply here.
Back
Top