Originally posted by crucial Si
at idle its fine but when it starts jumping its rough. really rough. sounds like a motor about to be killed by releasing teh clutch (slowly) and not giving it any gas. but it doesnt shut off...
Probably just cause the idle's too low (ie, just like not giving it enough gas).
I dunno .. it could totally be something else. Bent valve, fried clutch, or worse. But those are pretty unlikely, and there's a pretty famous principle that says that whenever you have a problem, the simplest explanation is usually the right one (see Ockham's Razor

). Why go looking for a bigger problem when a 4-dollar bottle of injector cleaner might do ya?