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Carb problem?

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

Anonymous

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I took the carbs off and cleaned them today. Re assembled them and fired the bike up. It seems ok till you rev it up . If you give it a little throttle, it rev ok , but most of the time if you give it a lot then it bogs down the rpm's drop and it wants to die.
The Bike is a 1980 GS750L .
I do have the gas in it from the fall could that be it? It otherwise seems to run fine, or at least as fine as it can.

Any Ideas?

I really hope I don't have to take the carbs off again :wink:

Thanks guys,

Jamie

Oh and the diaphrams seemed fine when I had the carbs apart.
 
Bummer

Bummer

Isn't it a bummer putting those carbs back on? :?: :?: (I have the same bike and don't remember when I've ever cussed so much :roll: ).

I don't know what your problem is (maybe an air leak)...Earl or one of the other smart guys will come along and answer that but I sympathize with you 'cause I'm afraid the carbs may be coming back off...I hope not! :cry:
 
Yeah, it wouldn't be so bad if it wasn't for the airbox :wink:
Maybe it's time for individual filters :lol:
I won't mind having to take them off one more time if it means it'll run great again though :D
 
This is almost certainly an air leak check ALL connections for dfit and tightness.
Dink
 
As far as hoses there is the fuel line and the petcock vacuum line, and then two other places hoses go(one between each pair of carbs on the back side) are those for vent tubes? There are no hoses on them right now.
 
Yes there are supposed to be hoses on those, However I was refering to the boots to the head and to the airbox.
Dink
 
Where does the other end of the hose go?

I will check to see if the engine side boots are messed up. I don't have the airbox side fully on, in case it had to come off again.
 
Down the back of the motor to allow overflow to drain , and also to allow venting.
Dink
 
( I don't have the airbox side fully on, in case it had to come off again.[/quote])
****************If you do not have the parts installed on the engine that are required for it to run correctly, please explain to me why on earth you expect the engine to run?

Earl


vista461 said:
Where does the other end of the hose go?

I will check to see if the engine side boots are messed up. I don't have the airbox side fully on, in case it had to come off again.
Click to expand...
 
:oops: :oops: :oops:

Well I guess I didn't realize how sensitive it was to having the airbox on.
I also assumed since the tubes were for vents and they were venting it would be fine for the moment.
Sorry
 
Y'know, my grandmother used to say to me, boy.....you do that again and I'll slap you to sleep. :-) :-) :-)

Earl LMAO


vista461 said:
:oops: :oops: :oops:

Well I guess I didn't realize how sensitive it was to having the airbox on.
I also assumed since the tubes were for vents and they were venting it would be fine for the moment.
Sorry
Click to expand...
 
So do you think the air box not being connected is the problem then?
That would be cool if it was the problem
 
It is certain it is at least part of the problem. There is a fairly high probability it is all of the problem. You never know until you try.

earl


vista461 said:
So do you think the air box not being connected is the problem then?
That would be cool if it was the problem
Click to expand...
 
I will try it in the morning.
Thanks Earl! :D

I must say the answers to questions come fast here :D
 
Yes

Yes

Come on, Jamie!! :!: :!: You've 'gotta give us the total "in/out" scoop before help will arrive............(I still think you've got an undiagnosed problem) :?
 
I was being serious about you guys helping quickly. Alot of forums you have to wait a long time for a response. Here i got a bunch and some things to try in a matter of hours. You guys rock!

I dug out the airfilter box and put it in. I still have to get the airbox boots onto the carb. I'll do that tomorrow. I guess I didn't realized these bikes were jetted so lean that taking out some of the intake restriction would screw them up so much.
 
When you get the airbox installed, be sure you have a filter in it, the boots are clamped tightly to the carbs, the airbox is sealed and the boots dont leak where they enter/join the airbox.

Let us know how it runs after all is installed and tight.

Earl


vista461 said:
I was being serious about you guys helping quickly. Alot of forums you have to wait a long time for a response. Here i got a bunch and some things to try in a matter of hours. You guys rock!

I dug out the airfilter box and put it in. I still have to get the airbox boots onto the carb. I'll do that tomorrow. I guess I didn't realized these bikes were jetted so lean that taking out some of the intake restriction would screw them up so much.
Click to expand...
 
Well I got everything back together and took it for a ride.

WoooHooo! You were right Earl. Everything is great now that the airbox/filter is connected. I wouldn't have thought that the bike was jetted so lean that it would be as bad as it was. You learn something new everyday. :lol:

And I guess the dumb@$$ award goes to ME. When in doubt put it back to stock :lol:

Can you still get individual jets for these carbs or do you have to go with a kit?
Don't worry I am not going out right now and messing with the jetting :wink:

Just curious in case I put on the indiv. style filters at a later date.

Thanks again guys , I like the bike again :D
 
individual jets are still available for the bike although, I would not ne inclined to rejet unless and day came along that I had too much hair and needed to pull some out or I had been really bad and needed to beat myself up. :-)

Good to hear youre back to having something to ride. Now, DONT break it!! :-) :-)

Earl




vista461 said:
Well I got everything back together and took it for a ride.

WoooHooo! You were right Earl. Everything is great now that the airbox/filter is connected. I wouldn't have thought that the bike was jetted so lean that it would be as bad as it was. You learn something new everyday. :lol:

And I guess the dumb@$$ award goes to ME. When in doubt put it back to stock :lol:

Can you still get individual jets for these carbs or do you have to go with a kit?
Don't worry I am not going out right now and messing with the jetting :wink:

Just curious in case I put on the indiv. style filters at a later date.

Thanks again guys , I like the bike again :D
Click to expand...
 
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