• 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.

%Pilot jet use at cruise

  • Thread starter Thread starter Mr.Mom
  • Start date Start date
M

Mr.Mom

Guest
Hi,
I have 1 cylinder that is fouling/missing on my GS850L. My uncle did a quick strip and dip, but honestly it is as if he never touched it.
Anyways I was wondering when a GS850L is in 5th @ 55mph is the pilot jet just a small portion of the fuel being used or a much higher percentage than full throttle?

Thank you
 
Last edited:
It is the throttle opening that determines what circuit you are on. How much is your throttle open? When I was jetting my 1100E I put tape on the throttle housing and marked the throttle travel in increments of 1/8 of full travel. Then I could look and see if I was at 1/8, 1/4, or whatever and could tell which circuit I was running on.


Mark
 
Hi,
I went for several rides today. Each one I was well within 1/4 throttle more like 1/8th. There seems to be one cylinder that gets a black sooty coat no matter where I have the mixture screw. The other 3 are ~ 3 1/2 turns from bottom. Each ride I took I lowered the rich looking cylinder mixture screw. Even at 1/2 turn the plug is still getting that flat black sooty look all over. The missing did seem to get worse as I lowered the a/f screw.
Can a plug appear to be "rich" from not firing all the time due to electrical problems? Or perhaps it is rich as the plug color suggests...?
 
Pull the carbs and do a full proper dip/sonic clean with new o-rings. A 'quick strip and dip' will not cut it on these old Suzuki's. I just fired my 850 up for the first time tonight in who knows how many years and all it took was 2 hours per carb in a sonic cleaner with new o-rings and resealing the airbox (which you may want to look into as well). Also plug color doesn't mean diddly unless you are doing a chop at different throttle openings. Just looking at them after a ride tells you nothing.
 
I am assuming there shouldn't be gas in the vacuum line to the gas tank...?
 
If the diaphragm had a small leak, could the gas leak into the vacuum line causing that carb to be rich?
 
Thanks folks for the ideas. The petcock was leaking gas into the vacuum line causing massive plug fouling. I simply plugged the line and ran the valve on prime. Now the bike runs smoothly at any throttle position. Ordered a new petcock also.

Cheers!
Andy:
Wisconsin
 
You must log in or register to reply here.
Back
Top