• 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.

Timing setting for 85 GS550L ??

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
I haven't a manual, does anyone know the proper timing set up for this "L" model engine??

I've been slowly fixing numerous problems with this bike & am running out of things to check. Many of you have given me very good advice regarding lots & lots of questions I've had while troubleshooting this bike. Needless to say, all the standard stuff has been either checked or replaced:

Carbs (dipped)
valve adj
intake O-rings & boots
petcock & fuel line
vac leaks
fuel level in bowls (using tube method)
Comp check (140, 140, 150, 155)

Idles well at 1500, but has ZERO power - backfires & stumbles when getting on the throttle. I'm still playing with the adjustment screws, but they're all set somewhere between 1.7 - 2.5 turns out, depending on how high I could get the idle up.

I will be doing a carb vac sync when I get the gage from a friend (next week), but I wanted to check the timing, as it seems to run like it's out of time.

I am considering raising the jet needles as a last resort, unless the timing check & vac sync make a major difference for the better.

Any other suggestions??

Thanks Mike
 
Sounds like you have done a good job regarding the usual suspects so to speak. Just wondering if you have changed the air filter and/or exhaust? If so, you will have to rejet. If not, I'm stumped other than to say that carb sync is not likely the issue unless it is WAY off. I don't know how to check timing on a 16v engine (yours is 16v isn't it?) Only other thing to suggest is maybe check the spark plug caps? Good luck.
 
Last edited:
Thanks for the response:

new air filter (paper, not oiled)
stock airbox & exhausts

Do you know anything about signal generators?? I was wondering if the electronic timing advace is working? Any way to check it??
 
You can't change the timing on the 16v 550. This is done electronically by the signal generator. There is a factory manual at repairmanualclub.com that will give you the resistance specs and instructions for testing the ignitor. You'll need an ohmeter to do it. I had a very similar problem with my '83 in that the spark was very irratic. A timing light showed the spark signal jumping all over the place. Test your generator with the manual, and I'm guessing you'll find the ignitor unit is bad.
 
You must log in or register to reply here.
Back
Top