Hi there

I recently bought a 1990 gsxr400 gk76a. It splutters at low revs like its missing on a cylinder and strugles with pulloff below 6000rpm, it flies like a bat out of hell when above that. Went past the bike shop who claim that a dyno won't sort it out and that a change of airfilter and plus is a first. Any advice or ideas where to get a ballanced set that won't have the same problem?

Hi Mate, It might be worth checking your float heights too... looking at around 20mm. There is some good advice on here about how to do it.