• 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.

Funky plugs, not sure what to do.

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

Anonymous

Guest
Hey guys, I have a 1982 GS650E that I just got running again, I've put about a 100 miles on it, and today I just pulled the plugs to see how it's doing here's what I got. #1 Is white, running lean. #2 Is sooty and black #3 Sooty and black and #4 is tan.

What should I do? Is there a screw someplace I can adjust to try and richen up the lean cylinder?

On another note, the bike also smokes when you start it but it goes away after about a minute, im guessing this would be a valve seal problem. The bike has less than 3,000 miles on it. The previous owner let it sit untouched for 13 years.
 
Oh, I forgot to mention

Oh, I forgot to mention

The carbs have been off before, sent them to a shop for cleaning. I do have access to the airscrews, the caps have been drilled. Also, I checked for an intake leak and there was no change in idle. So I'm guessing the carb is just adjusted too lean.
 
If the carbs are like the Mikunis on my bike, the screws are not air mixture screws but pilot jet screws for the slow circuit (idle and just off idle). The fuel and air is already mixed before it passes thru the pilot jets and the screws just control the amount. Used in conjunction with the throttle stop screw, they are just for setting idle and slow speed running. I had trouble getting my bike to idle right until I cranked these out to 2 1/2 turns from 1 1/2. The previous owner had the throttle stop screw cranked up to compensate and the bike would idle down to 2000 rpm and no lower unless I used clutch drag to force the motor down to 1200 rpm, then it would idle. Opening up the pilot jets to 2 1/2 turns out and turning the throttle stop screw back down solved the idle problem. To resolve lean or rich burning from the main jets requires pulling the CV diaphram and needle out and raising or lowering the clip on the needle. Lowering the clip raises the needle and enrichens the mixture. Raising the clip lowers the needle and leans out the mixture.
 
For the plug reads, it really depends on the throttle position you were at to get those reads. If just typical riding around town, then the mixture screws could be set incorrectly. They have some overlap effect with the jet needle at lower speeds. You can try counting how much each screw is turned in, keeping a record, and adjust them at different points to see how it effects performance and plug reads. You may try 1 1/2 turns out, 2 turns out...
It's also very likely the carbs need a vacuum synch. Unbalanced vacuum levels will give you those different reads everytime.
It's also possible the coil feeding 2/3 has a weak spark, and a combination of the above is giving you the different reads. Do you get a fat blue spark at 2/3 plugs?
As normal maintenance, I would synch the carbs and if needed, adjust the mixture screws.
 
Im getting good spark to all cylinders, I've never done a carb sync though, does the rack have to come off?
 
Uhhhh, no, the bike needs to be running to do a carb synch, so its much easier if they are on the bike. :-)

Earl .....ok, go ahead and shoot me, I couldnt resist. :-)


runforyourlife82 said:
Im getting good spark to all cylinders, I've never done a carb sync though, does the rack have to come off?
Click to expand...
 
earlfor said:
Uhhhh, no, the bike needs to be running to do a carb synch, so its much easier if they are on the bike. :-)

Earl .....ok, go ahead and shoot me, I couldnt resist. :-)


runforyourlife82 said:
Im getting good spark to all cylinders, I've never done a carb sync though, does the rack have to come off?
Click to expand...
Click to expand...
Another of Earls pearls. :roll: :)
 
You must log in or register to reply here.
Back
Top