Running Rough

[Craig54]

Finally started my old 1000g after it had been sitting for about 2 years.
What a buzz, I had forgen how much fun it could be.
Starts ok and runs at low revs fine.
The problem is I cant get it over 2k revs while riding, in neutral it revs out ok with only minor misses.
Any ideas.
Craig

[psyguy]

carbs clogged from sitting?
kinked fuel line?
in-line filter (if you have one) restricts the fuel flow?
any old fuel wouldnt help either

[uudfourty]

What kind of "minor issues" does it have while idling?

[Craig54]

Running Rough

Checked petlock ... prime clean flow
on and reserve only flows while running
Idles well no misses
plugs very sooty I will clean them up and give it another go.
Havent put the air box on yet but that shouldnt cause a problem
Craig

[saindon420]

if you donthave the air box in with a filter your bike can run like crap. My 650gl wont even start without the airbox

[Craig54]

Running rough

Wouldnt it just run lean without the airbox?

Craig

[Steve]

Wouldnt it just run lean without the airbox?

Craig

No. There are a couple of things that come into play here. The inlet tubes in the airbox smooth the airflow into the carb throat to minimize turbulence which would affect its ability to properly meter fuel. Another thing is that the carbs require a certain amount of restriction for all the parts to work properly. You need either a stock airbox or pods to provide that restriction. Another quick fix for testing purposes only is to fold a shop rag in half and drape it over the inlets of the carbs. Use zip-ties to hold the rag to carbs 1&4, keeping it somewhat taut over 2&3. This will allow the bike to run, but it is not accurate enough to check your jetting.

.

[SqDancerLynn1]

Common problem newbies try & run their GS without the airbox. It's NOT going to happen

[psyguy]

The problem is I cant get it over 2k revs while riding, in neutral it revs out ok with only minor misses.
Any ideas.
Craig

so, was this with NO airbox

[Craig54]

Running rough

Yep no airbox

Craig

[psyguy]

well, make sure you have a properly sealed airbox (as well as the whole intake system) and start from there
you cant really troubleshoot the fuel delivery system if part of it is missing

[Craig54]

Running rough

Thanks guys
what a difference
Airbox on and away we go
Wow I forgot what a buzz it was to go for a ride
Box is sealing well except that I cant figure out where the hose coming out of the top goes??? so its still sucking some air.
There is still the odd miss/ flat spot but its minor I havent cleaned the plugs yet and it has been sitting for about 18months.
Craig

[psyguy]

glad to hear such a basic thing as adding an airbox worked so well :-D

you re prob talking about the engine breather hose that goes on top of the valve cover

should run even better once that is in place too

[Craig54]

Running Rough

Thanks for the input guys.
Put the airbox on and yep big difference.
Still a bit of a flat spot but only minor.I am happy to be able to go for a ride again
What a great site I keep finding new info every day
Thanks again.
Craig