GSX won't run past 4,500 on reserve

[jbarsic]

97 gsx. New fuel lines and new fuel selector. Carbs cleaned and rebuilt. Tank pulled and cleaned.

I've put about 12 hours on it and besides the rave valves sometimes acting up, it runs strong and will turn 6,600 rpms all day long but if I put the fuel selector on reserve, it won't run more than about 4,500 rpms before the motor wants to die. I think I got a bad fuel selector. Anyone else had this issue but it not be the fuel selector? Ideas?

 

[Paul Bretz]

I have same machine. Havent had same issue. What about sending unit?

 

[Matt Braley]

Yes bad fuel selector unless a hose is kinked.

 

[mikidymac]

The fuel strainer could be sucking air too.

 

[jbarsic]

I could check the sending unit. Gas gauge quit on me so I need to pull it anyways.

 

[jbarsic]

Wouldn't the strainer also give me problems with fuel selector set to on if it was sucking air?

 

[jbarsic]

Yes bad fuel selector unless a hose is kinked.

Kinked hose would be nice and simple to fix. I will check when I pull the sending unit.

 

[mikidymac]

I would never trust an old selector. I replace them any time I do a fuel system refurbishment.

 

[jbarsic]

I would never trust an old selector. I replace them any time I do a fuel system refurbishment.

Its not. I replaced it with the fuel lines but I think I got a bad one. It is really easy to turn so I think the internal tolerances are off.

 

[Coastiejoe]

Is it an aftermarket selector? If so, bypass it and see if the issue goes away.