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HELP!!! big carb problem!!!

  • Thread starter Thread starter jjcr6
  • Start date Start date
J

jjcr6

Guest
Ok, heres the deal. I have a 1980 gs750 not sure if its a L or E. I can get it running off starting fluid, Also if i take the to t vent lines off the carb and blow air in them. Are the vent lines supposed to go somewhere or just kinda hang? Im getting real mad can't seem to figure it out it just wont run without blowing air into the to t vent lines someone please help me.
 
jjcr6 said:
Ok, heres the deal. I have a 1980 gs750 not sure if its a L or E. I can get it running off starting fluid, Also if i take the to t vent lines off the carb and blow air in them. Are the vent lines supposed to go somewhere or just kinda hang? Im getting real mad can't seem to figure it out it just wont run without blowing air into the to t vent lines someone please help me.
Click to expand...


Get a long piece of tubing so you can snake it up to your helmet and blow into it while riding.:D
 
I did that twice already soaked in cleaner pulled all jets cleaned very very throughly. Do the Vent lines run anywhere??? does anyone know if the vent lines go anywhere? when i blow to much air the intake side of the carb will start SPEWING gas and I do mean spewing shoots a good 6 inches out of every carb. I cleaned everything. I wouldnt be asking anything if it was something maybe easy.
 
it was not anymore cant get to **** with it on so had to have it off to work on the damn thing and its to big a pain to put it on and off. just figured Id leave it off for the time being.
 
jjcr6 said:
it was not anymore cant get to **** with it on so had to have it off to work on the damn thing and its to big a pain to put it on and off. just figured Id leave it off for the time being.
Click to expand...

No airbox = FAIL

The carbs are jetted for the airbox and the engine won't run right without it unless you rejet. Easy fix. :evil:
 
but wouldnt it atleast run even bad without the airbox. I mean it wont even turn over at all.
 
In order to produce vacuum through carbs the airbox should be on..
 
Then find out what's wrong with your carburetors. It's hard to see the problem from here.
Did you dip the float bowls as well?
 
i didnt know the airbox was that big a deal on these especially on something so old. my new bikes can run bad without intake.
 
jjcr6 said:
i didnt know the airbox was that big a deal on these especially on something so old. my new bikes can run bad without intake.
Click to expand...

That's because they are fuel injected. The movement of air means nothing.
 
ok well i will try putting it back on and then go from there ANY I do mean ANY other ideas please please post because im sure i will have more problems thanks.
 
My carbs need rebuilt but it will at least start and run with the box, wont even fire without it. Same with cheap pods.

Food for thought..
 
jjcr6 said:
ok well i will try putting it back on and then go from there ANY I do mean ANY other ideas please please post because im sure i will have more problems thanks.
Click to expand...


PLugs, wires?

Plugs can look good even when fouled.
 
I did see all those posts when I searched the archives and if you read they dont answer my questions, but thank you for checking. I havnt had time to put the box on. sounds to me like this airbox its life or death for the motorcycle.
 
Without carb work the bike will not run without the factory airbox.

Its as simple as that!!
 
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