Sudden power loss problem?

[stinky]

The bike is a 1981 gs 400. It was running fine, then it started to have to be reved really high to get any power. I cleaned the carbs a month ago and they are fine. The bike has fresh oil. Could this be related to a clutch adjustment? Does anyone think the clutch needs adjustmnet? Can't figure it out. Cheers, S.

[argonsagas]

When cleaning the carbs you likely changed the settings.

Time for a full adjustment.

[stinky]

The bike has run fine for 1000 miles since the carb cleaning, It seems doubtful don't you think?

[Nicholaschase29]

check to see if you have a fouled plug?

[t3rmin]

If the engine revvs high quickly but the bike speed doesn't increase steadily but instead "catches up" gradually, then it's your clutch.

Does the motor sound/feel smooth?

[stinky]

Power problems continued..

Okay, thanks for the suggestions. Here is what I have. A very wet (gas soaked plug). I am actually getting gas coming out of the right (sitting on the bike) pipe. There is spark from both plugs. I took the carb out and cleaned it. I swapped the right ignition coil with a spare to see if that was it. Still the same. The bike runs no different when I pull the right hand side plug wire off. When I pull th left the bike dies. What could this be? It is killing me[-o< [-o< [-o< [-o< [-o< Help please

[bonanzadave]

Sounds like a RT side problem. Its only running on the left side. If ya got spark on both sides you must be flooding the right side. Bad Float height or a stuck open fuel needle valve.

[bwringer]

Possibly a bad petcock, too.

Check to see if there's any gas in the vacuum line. Every GS needs a new petcock at some point.