• 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.

Stuck pilot screws

  • Thread starter Thread starter steve523
  • Start date Start date
S

steve523

Guest
Hi,
This is the first of what may besevral posts by me (read "Why?? You ask why?? in GS Owners).

Here's the deal- all 4 carbs have seized air adjuster screws. They sit opposite a gutted no restriction (no mid range power) exhaust. The original 112.5 main jets have been swapped with 124's the air jets are 170's. I can't seem to find out how needle and needle jets can be identified. And to top it all off the bike now lives at about 5000 feet instead of sea level. All of this leaves me without any references. I am trying to find a reasonable baseline to tune from- jet sizes vs. the new condtions. I have several months before I will be ready to run. For test purposes the tired old exhaust will get fitted with super trapp restrictor plates to get some back pressure, or maybe some steel wool? I am looking for mid range power because of the way I ride. Any info that would help me get to a good strting point for tuning would be appreciated. Also I have ideas to get the screws out, but if anybody has "been there, done that" your feedback would be very helpful.
 
Hi Steve,

It would be a big help if we knew what year and model you are talking about as this is the only way we can advise you.

Thanks
 
I have ideas to get the screws out, but if anybody has "been there, done that" your feedback would be very helpful

oh what fun. will thay turn in words a bit. you will need to soak them in something to brake the paint thay use to seal them in with.

a good cab cleaner should do the work. take all the time you need dont get in a hurry. do not force them. once thay are a little free work them back and forth slowly. acetone will work too just put a few drops in every 30 min or so. get some o-rings, thay may be in bad shape after.

if you cant get the air adjuster screws out by soaking them then strip the carb all the way down. then dunk them in carb dip. this will eat almost every thing, including the o-rings for the air adjuster screws. but hopefuly the sealent thay used on the screws.

its a pta "pain in the a##" to get them out the first time. just wate till you get your first gumed up fuel mix screw. takes days of soaking and gentle turning to get one out with out braking the point off.
 
Yes if suzuki had only made the slot a little deeper I have had good luck drilling them, BUT use a left hand drill bit, when the bit grabs it will unscrew instead of jaming the needle into the carb body. If you have carb kits with new needles you are all set. Otherwise you could epoxie some type of allen screw into the drilled hole for adjustment
 
Oh, I have been there, done that. More than once...

First things first, get some PB Blaster. It's 100 times better than WD40 or Liquid Wrench. Soak the threads above the screws. Maybe try and use a pipe cleaner to clean out the threads with the PB Blaster. I usually take the carbs apart completely, might as well clean and rebuild them at this point.

The first method I employ is using a dremel tool with a tiny round grinding ball bit. The grinding ball is less than 1mm around. Grind the screwdriver slot larger (carefull of the threads), then try to back them out. Hopefully this works.

If not, then buy an easy out tap. Probably the smallest you can find. Drill the recommended hole as deep as you are comfortable with. Make it as centered as you can. The screws are brass, so they actually grip the easy out tap pretty good. Unfortunately, the softness of the screws can be a problem as well, and you'll know instantly if it isn't going to work. If it slips, try to apply a little more downward pressure and try again. If it slips again- stop. You are gonna have to resort to the last straw.

I have only had to do this once, but if no other methods work, drill the hole you made for the easy out tap progressivly bigger, until the hole is almost as big as the threads. Then I use a small steel pick to try and pry away the remaining brass around the threads. You will no doubt do some damage to the threads, just try and keep it to a minimum. Keep trying to spin the screw with the pick, or the easy out, and with some luck you will get it out. This took me an entire night to do, and I did some damage to the threads. Luckly there was enough thread to hold a new screw.

Keep in mind these screws are not cheap. Good luck.
 
You must log in or register to reply here.
Back
Top