• 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.

Carb Help

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
I need help! Let me give you the history before the problem. I got this 82 GS 450 from a friend. It had sat for 3 years. I changed the oil and plugs and put in a new battery and gas and it fired right up. Ran like crap and discovered it was only running on 1 cylinder. Electrical checked out fine so I yanked the carbs to find one bone dry. I half-assed cleaned it out and reinstalled and put on a Mac exhuast with new gaskets since the stockers were holed and removed the airbox. It ran on both cyliders but had a dead spot in the acceleration at about 4000 RPMs. I chocked that up to not having any filters on it. I beat it around the block for a couple of days and then it wouldn't start. I figured the carbs were just dirty since it sat so long and I only half-assed cleaned the 1. Since I had the new exhaust and bought a set of pod filters I figured I would put in a jet kit when I tore the carbs down for a good cleaning. That's the history.

Here's the problem. I installed the DynoJet kit and cleaned the carbs within a inch of their lives. Put the carbs back on with a fuel fliter (Screen Type), never had one on it before, with emgo pod filters and removed the vent tubes. It won't start. Actually it will, every once in a while for a couple of seconds then stalls. If the choke is on all the way and the idle setting is set as low as I can get it it will idle but will stall if I change either of the 2. It backfires alot when trying to start as well. I have tried numerous mixture screw settings from a stock 1 1/4 turns out to the recommended 5 1/2 for the DynoJet Kit. I got frustrated and removed the jet kit and put it back to stock. Still won't start. Someone give me a clue where to look. The bowls are filling so its not starving unless something is wrong in the idle circut which I don't know where to begin looking. Anyone been down this road?

Please help,

John
Cincinnati, OH
 
sometimes if the bike sits too long the spark plugs might foul out. and when you get excited about one thing you may overlook other ones.

pull off a spark plug boot, put on a new plug and ground it to the frame and check for spark on each wire. if you have spark, pull the plug out of the engine, ground it, check for spark.

i think this might be the reason...just going on my experiences.

~Adam
 
toolman

toolman

I am still green with working on bikes but here's what I would do.

I would first check to see if you have spark. Try using spark tester on the engine block (couple $)
I would check out the spark plugs right after you try to fire it up - to see if there is any fuel in cilinders or if it is flooding.
Then I would double check the setting of the idle screw, and afetr that I would call someone who knows what they are doing to help me :)

I hope I maybe gave you some ideas.
 
also check the petcock, make sure that you are getting fuel
 
Plugs are fine and spark is fine those were the first thing I checked, also petcock is fine and I put on clear fuel line to monitor the flow of gas. The problem is in the carbs somewhere?
 
Idle circuit

Idle circuit

Try a SMALL shot of gas straight through the carbs into the intake. The popping is lean or out of time. Seeings as it ran before, my guess would be that you missed some junk in the carbs. Go through the carb cleaning in The Garage section and see where each circuit gets it's fuel from. Did you get the pilot jet out or just spray cleaner everywhere? Did you set the floats about the right height? It's in the carbs I would guess. Bob
 
You must log in or register to reply here.
Back
Top