hi my y reg ford ka 1.3 endura has a running problem.when its started from cold it revs and picks up fine,when its warmed up if you rev it slowly it picks up ok but if you rev it quickly it runs very lumpy and then picks up and revs ok.when i started it this morning from cold it revved and picked up fine would this be the engine temprature control switch? please help thanks

david, April 2010

your throttle housing is contaminated wit oil clean it out with WD40 sprayed ont a cloth and wiping inside to clean it

peesian, April 2010