I'm having some problems with my GS-twin, I got it runnig after cleanning the carburators 2 weeks ago. The problem is that when I'm going at around 50-65MPH , the bike hesitates, and does not accelerates past that. when I"m at a stop light the RPM stays at 3,000, and does not go down.

Does anyone have an idea why this is happening?

You probably "cleaned" your jets to have bigger holes and you're running too rich?

Yeah, doubt it's the throttle cable.  that could happen if you didn't tighten the jets down all the way   

I took the bike for a ride about 2 hours ago. The ride should of have lasted about 15 minutes, all of the suden the engine died wile i was going @ 60MPH. I had to pull over to the shoulder, and watch other bikers pass by for  an hour. I put the bike on choke and it ran, but if I turned of the choke the engine would died again, finally I let it run on full choke for about 5 minutes and then I turned of the choke again and the problem (the engine dying ) was solved!

Quote from: Chuck on March 27, 2007, 04:02:07 PM
You probably "cleaned" your jets to have bigger holes and you're running too rich?

If I have made the holes bigger, did I ruin them? if so do I just get new ones?

Well let's not jump right there yet.  I could be full of crap.  Did you clean the jets with steel wire or something?  Or did you just use solvent(s) and compressed air?  The former would be potentially damaging, but chemicals and air should be ok.  I ruined some jets cleaning them out with a guitar wire, but I was planning to replace them anyway.  Once a jet is damaged/enlarged, it's out of spec in an undetermined fashion and has to be replaced.

NO, I just used air and solvent. I'm going to replace the gas in my tank, I noticed something that looks like oil bubbles .. Last time I cleaned the carbs I also added a fuel filter, so I'm going to check the filter first and then the carbs.

drain the bowls and see if water comes out....bubbles in the fuel.....

  I can't beleave there was so much dirt in the bowls after less than 1 month!
I took the airbox off from the carbs and open the throttle with the engine running, and I noticed there is more fuel being sprayed in one of the carbs. I also noticed there is a backfire when I hold the throttle open @ 2,000 RPM. Is this a case of scaping air?

Thinngs I did today to fix the problem:

1- I drained the fuel tank and tried to get as much dirt as possible out of it.

2- Put new gas in the tank.

3- Cleaned all the dirt I found in the bowls.

It's too cold now to go for a test ride, but after I did all that's listed above the bike sounds good(not the backfire) I'll go fur a ride tomorrow and see what's up...

OK, Today I took it for a spin and when I open the throttle the bike doesn't hesitate. The problem now is that the bike doesn't accelerate after 50mph's !
I keep noticing the bike's RPM stays @ 3,000. Is this caused by an air leak?

The bike starts without problems.

Iddles @ 3,000 RPM's after I open the throttle(when warm).

Does not accelerate in a normal way.

Won't go past 60MPH's

does it pull to 3k?
does it bog past 3k?
is there still room to pull throttle open?
are the plugs WHITE?

spray carb cleaner or wd-40 around the carbs while running.....does the RPM change?

Are you certain that you reinstalled the choke cable correctly?  Sounds like the choke may be stuck in the "on" position.

good call trumpetguy

Quote from: trumpetguy on March 29, 2007, 07:36:12 PM
Are you certain that you reinstalled the choke cable correctly?  Sounds like the choke may be stuck in the "on" position.

The choke is not stuck, I cheked that already.

Quote from: werase643 on March 29, 2007, 07:20:32 PM
does it pull to 3k?
does it bog past 3k?
is there still room to pull throttle open?
are the plugs WHITE?

spray carb cleaner or wd-40 around the carbs while running.....does the RPM change?

It goes past @ 3k while the bike is not moving

Yes, there is still room to pull the  throttle open.
If you mean the spark plugs.... They're brand new, and look good to me.

Quote from: Merkurio24 on March 29, 2007, 10:47:52 PM

Quote from: werase643 on March 29, 2007, 07:20:32 PM
does it pull to 3k?
does it bog past 3k?
is there still room to pull throttle open?
are the plugs WHITE?

spray carb cleaner or wd-40 around the carbs while running.....does the RPM change?

It goes past @ 3k while the bike is not moving

Yes, there is still room to pull the  throttle open.
If you mean the spark plugs.... They're brand new, and look good to me.

no, he means pull the plugs and see what color they are. If they're white, they're lean, if they're tan, the mix is ok, and if they're black, they're rich or oil fouled.

Quote from: NiceGuysFinishLast on March 29, 2007, 10:59:47 PM

Quote from: Merkurio24 on March 29, 2007, 10:47:52 PM

Quote from: werase643 on March 29, 2007, 07:20:32 PM
does it pull to 3k?
does it bog past 3k?
is there still room to pull throttle open?
are the plugs WHITE?

spray carb cleaner or wd-40 around the carbs while running.....does the RPM change?

It goes past @ 3k while the bike is not moving

Yes, there is still room to pull the  throttle open.
If you mean the spark plugs.... They're brand new, and look good to me.

no, he means pull the plugs and see what color they are. If they're white, they're lean, if they're tan, the mix is ok, and if they're black, they're rich or oil fouled.

I took them out yesterday after I installed the carburetors, and they are a little  white, what should I do?

Quote from: Merkurio24 on March 29, 2007, 10:43:18 PM
The choke is not stuck, I cheked that already.

Are you referring to the lever on the handlebar itself, or the actual choke mechanism on the carb?  Either one could be stuck (or the cable could be improperly installed) -- make sure you have checked all.

Quote from: trumpetguy on March 30, 2007, 02:49:09 PM

Quote from: Merkurio24 on March 29, 2007, 10:43:18 PM
The choke is not stuck, I cheked that already.

Are you referring to the lever on the handlebar itself, or the actual choke mechanism on the carb?  Either one could be stuck (or the cable could be improperly installed) -- make sure you have checked all.

I 've checked both, and I don't see any damage to eather one!

So is it fixed now?  If so, what was it?

Enquiring minds want to know...