• 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.

Please help!!!!!

  • Thread starter Thread starter GS Novice
  • Start date Start date
G

GS Novice

Guest
So I acquired an 83 GS1100e with some problems I wanted to take care of before making it roadworthy(leak in the top end and front end problems). After taking down the top end down to replace gaskets I cannot get the bike to run properly. It fired up right away with the choke on but would die as soon as the choke was removed or any gas was given. at this point I tore the carbs down for a much needed rebuild and to replaced a diaphragm that had a hole in it, thinking this was my problem. Upon replacing the carbs I am still having the same results. Would not having the airbox installed completely cause this with the CV carbs? I have installed the airbox before tearing the carbs apart and this didn't seem to make a difference at that time. At this point im leaning towards this or a timing problem, Any help would be greatly appreciated as looking at this forum I can see there are many knowledgeable people on these bikes. Thank you in advance
 
Timing is off? cam timing is off? bench synch is wayyy off? You should be able to start the bike with the air box off.
 
Thank you all for your quick replies! So to answer said questions, yes the jetting remained the same on all jets and the only ones not replaced( but cleaned very well) were the main jets. I have just removed to valve cover to check timing and all seems to be well there. All cam points line up with the crank at the T 1-4 mark and the valve clearances are set to spec. I still need to completely install the airbox and filter to rule this out as my problem but I am trying to go back through anything that was disturbed to recheck my work. I am getting spark at all 4 plugs but #'s 2and3 were wet so I would have thought there was an issue with timing
 
Throw a shop rag ( single layer thick ) over the carb throats and give it a try. that little restriction is needed for the carbs to suck fuel up from the bowls.
 
Cannot and will not give up, most of the literature I have found on these bikes is rather vague so I figure besides this site the only way I'm going to figure the problem out is by trial and error( mostly error I've found). Either way the replies are helping me get going in the right direction so I'm hoping I'm almost there.
 
Dont know what you mean by "cleaned very well" but if it wasnt to the specs indicated in this tutorial youve got gunked up internal passages in the carb bodies. Some Berrymans or similar carb dip, a CV oring kit, and new bowl gaskets will be in order. Untill the carbs are 100% without anyn doubt rebuilt youre gonna chase your tail.

Heres the turorial and a link to one of our members website where he sells the kit for the carbs. 1 kit does all 4 carbs.

http://www.mtsac.edu/~cliff/storage/gs/mc_maint/GS_CV_Carb_Cleaning_Series.pdf

http://cycleorings.com/
 
If you still have stock jetting, the bike will never run right without the air box installed, an OEM air filter element in place, the lid in the airbox, and all the rubber boots properly sealed. You must start there to get it running before trying anything else.

You are wasting your time trying to troubleshoot issues without starting at square one.
 
CV carbs WIL run till about up to 3,000 RPMs and then they start to stumble. I think I may have some video on photobucket to support this..i will try to find it.
 
Thank you all again for all your hospitality and help, not enough people like yourselves these days. So I have taken all advice to heart and have rechecked timing, valve clearances, and bench sync on the carbs. So far so good as I'm calling it a night but will start the bike in the morning to see where I'm at. Wish me luck!!!
 
".....but would die as soon as the choke was removed or any gas was given."
your carb cleaning failed to clean the pilot/idle passages - tiny,so bike can't get enough mixture to stay running once you remove "choke" circuit. As mentioned, bike should start and idle OK with or without airbox provided idle circuits are clean.
 
If the engine is warm and it will not idle without the choke circuit in operation, then you will need to sort out the pilot/idle passages (as above). Before that, just check that the idle adjustment (main single adjustment knob) is not set to 0. Fire the thing up, warm it up and try to close down the choke and at the same time adjust the idle knob to see if you can keep it going.

For testing purposes, you do not need an airbox or exhaust and you will be able to rev the bike up to test the main jets are working. Of course do not ride it like this.


If after the engine is warm and idling without the choke and you have no throttle response like this:


Then it's no fuel coming through the main jets. Most likely float heights wrong or (as was in my case) the main jet needle assembly was put together incorrectly (my fault). This is what I did wrong:

P1100717.jpg


Left side is correct!

Greetings
 
Last edited:
Thank you again everyone for your input, so after talking to friend that uses this engine in his dwarf car and seeing all of your replies related to the airbox, my curiosity got my better interest and I dove into the carbs once again. As far as body and passages go the carbs are great, but as I was going to reassemble I noticed the pilot jets that came in the new carb kit had holes in the sides of them which the old ones did not. I checked further into the other parts used from the kit and they were all different in one way or another. I'm praying my issues are answered with this find but I am going through the carbs again one by one to see if I find anything else inside
 
GS Novice said:
Thank you again everyone for your input, so after talking to friend that uses this engine in his dwarf car and seeing all of your replies related to the airbox, my curiosity got my better interest and I dove into the carbs once again. As far as body and passages go the carbs are great, but as I was going to reassemble I noticed the pilot jets that came in the new carb kit had holes in the sides of them which the old ones did not. I checked further into the other parts used from the kit and they were all different in one way or another. I'm praying my issues are answered with this find but I am going through the carbs again one by one to see if I find anything else inside
Click to expand...

Aftermarket carb kits are pretty much junk. One is far better off using the original jets and other parts than an aftermarket kit.

If there were jets missing or damaged, Mikuni jets are still available on line at various vendors.
 
You must log in or register to reply here.
Back
Top