its the little block or sensor next to the metering head and intake pipe on a k-jet 8v.
when you disconect it the revs drop as if to stall. ive noticed it keeps clicking. when i disconect it clean it reconect it the revs are fine but after a few seconds the revs go up and down and it clicks every 3-4 seconds.
can anyone name it and tell me a rough price to change it or fix it cheers all carl