My corsair auto 2 litre is having some problems. Seems to have a lowish idle and when the throttle is pressed the revs drop before building up, it sometimes stalls, even if the throttle is pressed gently. On takeoff the car stutters a little before going, sometimes stalls even with very little throttle applied. Nearly impossible to get it to takeoff with more than half throttle without some major stuttering/stalling. The stuttering also only occurs on takeoff and once in 2nd gear has no trouble. It is weird because roughly half the time the car runs perfectly (no stuttering, stalling). It could stutter heaps on the drive to work and yet on the drive home run beautifully. Leaving the car warm up makes absolutely no difference (it is sometimes worse after warming up).
Fuel consumption is terrible (around 15-20 litres/100km) with light driving not in traffic, rarely use full throttle. About 2 in every 3 tanks are Shell V Power. Oil Consumption is a little high and needs a big top up at least once every 5000km
I have replaced the fuel filter, had the injectors cleaned (was told they where clean anyway by the the guy did them), distributor cap, spark plugs + leads. The engine is untouched (no mods).
The car only has 48,000 kms on it, has been serviced at least once every 5000kms.
Me (and my mechanic) are stumped. Anybody have any ideas? Thanks