• 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.

HELP - she cuts out with throttle but idles OK

  • Thread starter Thread starter DCgs450L
  • Start date Start date
D

DCgs450L

Guest
HELP!!!
Got a 86 gs450L as a present from my brother. :o She starts and runs at idle but immediately dies if you give it any throttle. Starts right back up easily. I let her warm up completely, ran carb cleaner through the tank, checked the petcock. My brother says he pulled the carbs and cleaned them but I don't know. She has a new battery, new plug/wires, and oil. Was sitting for some time before he got it. She starts up easily, though you gotta keep the choke out for a few minutes. Any suggestions? I haven't checked the voltage yet. I am going to check the air filter and fuel filter next.
 
Either uber rich or uber lean... does it still cut out if you let it run for awhile and warm up? I'd hazard a guess that it's overly rich.
 
The cutting out continues after its warmed up. I had her idling for over 30 mins last time in 70 degree weather. One thing I forgot is that once warmed up if I open the choke the engine immediately races to about 6K rpm. does that mean rich or lean?
 
your carb slides are sticking. Or your main jets are plugged. Take the carbs apart, clean the main jets, and clean the slides.
 
Thanks, I will post a reply if this fixes it. I have never worked on carbs so I wanted a little input first.
 
Well, I couldn't get the carbs off before it got dark, so I drained the tank and let it sit. When I went back a few weeks later and added the gas back to the tank I saw it was nasty yellow, almost brown. I realized my brother must have put fresh gas on top of old gas, which was why the bike ran when I first got it but got progressively worse. I completely drained the tank, got fresh gas, added 3 bottles of carb cleaner and 1/2 gallon of gas and ran the bike. It didn't like running on the cleaner so I gave it a spray of intake cleaner in the airbox to keep her going. After a little while i was able to rev it up, each time a little higher. After about 15 minutes I was able to get it to full throttle and throttle response was improving. Added a full tank of gas with stabilizer and ran her down the block. In the spring I will put more cleaner through as I ride and have the carbs professionally cleaned next winter if they'll hold out. I am planning a pretty serious restoration for next winter.
Thanks for the help, knowing that it was a dirty jet or slide helped me to know I was on the right track.
 
DC,

Those carb's need to come off and be disassembled and soaked, then new o-rings and needle and seats installed. Carb cleaner in the tank is only a patch and can cause more problems then you may know. Carb cleaner distroys rubber.

If you haven't ever worked on them, they are easy to work on. That is what I do. I have a side business. I can either walk you through them or do the work if you are interested. All you will need is a kit for each carb. And if you do the work yourself, try and find some Berrymen carb cleaner in a gallon can with the basket O'reilly's or Autozone or Advanced auto and I'm sure there are other than handle it. Then they will need to be adjusted and synchronized.

Good luck!

Gary the Toymechanic
 
You must log in or register to reply here.
Back
Top