• 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.

Suzuki gs 750 -77, one cylinder not working

  • Thread starter Thread starter runhan90
  • Start date Start date
R

runhan90

Guest
Im from Norway, hopefully i?ll write in a way that you understand.

My GS?s left cylinder does not fire. It has spark, compression, and there is fuel in the carb float bowl.
One the other hand, the two cylinders on the right(especially the exhaust) gets insanely hot just after a few seconds. I have recently changes oil and filter and spark plugs.

Yesterday, finally, all 4 cylinders fired. Today, only three.
I guess its important to mention that it chokes even if I give it a bit of gas, or eventually take of the choke. It did this yesterday as well..

So... For me it seems like a mixture problem. But why would it suddenly fire on all fours yesterday?
A random guy I talked with told me to check if the oil smelled of fuel. I guess its hard to tell inn a small garage, pakked with cans of fuel and oil, but I think it smelled fuel from the oil.

I?m planning on cleaning the carbs and air filter, and everything in between, in march when i can get help from a friend.
 
Check the petcock to see if it's leaking fuel, it should only flow in the prime position, or if you suck on vacuum line in the run position. Should not be gas in the vac. line.
Plugged up pilot passages in the carbs or bowls can cause a cold cylinder on start. Sounds like you will be going through the carbs soon, so that might fix it. Make sure you bench sync the carbs and then vacuum sync once they're on the bike. Bad snyc can cause cold cylinders too.
Try adjusting the air screws using the 'highest idle method', that might help if a few of your cylinders aren't dialed in great.
 
Last edited:
If there is too much fuel in the cylinder, it will not fire. I had some issues with fuel leaking into the cylinder. The bike would run, but the exhaust pipe on that cylinder would stay cold. I had to let the bike sit for a few days to let the fuel drain out or evaporate. Then it would start.

If you have fuel in the oil, you should change the oil as soon as you fix the overflow problem and before you start and run the bike.
 
You must log in or register to reply here.
Back
Top