• 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.

82 750 E with 4 into 1 power band problem

  • Thread starter Thread starter oshns11
  • Start date Start date
O

oshns11

Guest
I bought an 82 GS 750 E last year and finally started working on it. I have completely cleaned and resynced carbs and put a new clutch in. When bike is at idle I hear clicking so I know I need a valve adjustment. The problem I have is at idle with no load on bike when you rev it revs fine, but when you put it in gear and ride there is now power down low. At least until about 3-4k rpm then she pulls great. I have 2 mechanics telling me 2 different things. 1 says fix do the valve adjustment and that will fix it, while the other says it is a jet kit that is needed. Any suggestions? I am not sure whether this had a jet kit in it to begin with. Any help would be appreciated.

Thanks
 
To me the bike should still be able to pull somewhat decently without the valve job.

- Does it have an aftermarket air filter or pods?
- Maybe you can take the top off one of the carbs and see if there are adjustable needles or additional washers or shims?
- Has the epa cover on the air mixture screw been removed?

If it starts pulling good at 3-4000 rpm and above that then I would say there is already a jet kit or it has been jetted.

And you may just need to 'turn out' the air mixture screw
Doing or checking this on your bike I'm not familure with could be on the bottom of the carbs as I am use to finding it. A good place to start is always about 2.5 turns out from 'slightly seated' BUT let some more members chime in when they get a chance.

Seem like everyone is out riding . . . May be able to 'search' some threads on jetting and valve adjustments for additonal help - Good Luck Ride Safe

-Mike
 
Since your problem is only in the low speed area it has to carbs. GS motors are set up pretty loose and the top ends do chatter. The valves would have to be way out to make it run poor and then it would most likely be at all rpm's.

Soungs like low speed pilot jet/mixture problems. Not very familar with the stock '82 carbs but here is where I would start. Sounds like once it comes on the needles (3000 rpm) it cleans out and runs fine.

I tried to tune (Dynojet) my stock 33mm '83 GS750 carbs to match a V+H pipe and drop-in cams without much sucess. Once you start making major demands on the stock carbs they get harder to dial in. My fix was a set of used GSXR1100 34mm CV flatslides. They tuned easily and were good on the bike thru various stages of engine modifications.

As a backup, the early air/oil cooled GSXR CV flatslides should bolt right up, the early 1100 had the 34's, they were the carb swap for the 16v 750 back in the mid 80's'.



Good Luck, Ed.
 
You must log in or register to reply here.
Back
Top