172 with k-tec sound
i have a buzzing sound coming from the black casing on the throttle body, me and da had a look and i ended up taking the body off and cleaning it ect, but this hasnt solved it, car ticks over lumpy and stalls when started from cold and seems down on power also had the emissions light on intermittent but didnt seem to coincide with this it comes and goes at monthly intervals or after a spirited drive sometimes and then goes out and u dont see it for another mth or so. when da took the air intake pipe off and pressed against the butterfy there seemed to be resistance. any ideas guys