My GZ250 gets funky in fifth...

[Easy Rider]

Originally Posted by Cordell_Love

maybe the dominican dude who owned it previously took'em off and lost'em...my spanish sucked as bad as his english.

put half a cup of seafoam in a full tank of gas...the engine runs smoother and a bit stronger,

I suspect the PO was screwing around with changing the pipes and lost them in the process.
I suggest you get some and put them on; this still may be part of your problem.

As for carb. cleaner, SeaFoam is not REALLY good carb. cleaner. It may be good "enough" in some circumstances but you should not get in the habit of counting on it.
Original Gumout Carb. cleaner (not mulit-functional stuff) or Berryman's B12 are much better.