Hi. Car is a 2008 68k Volvo V50 2.0 petrol (actually the Ford Zetec engine).
Only had the car 5 months, done 8k in it. Will ask about this when it is next serviced at 75K but....

I know power is very subjective but I find it pretty gutless for a 2.0. There seems very little power under 4000rpm, after which it is better but doesn't really get going. Hills require down changes to keep a constant speed etc.

It also seems to have a slight misfire at idle. When accelerating hard it seems to hold itself back, intermitently surging through out the rev range - hard to discribe but feels like it coughs 3 or 4 times as you accelerate from say 2000 to 6000rpm. Also if you rev it when in neutral it is distinctly rough sounding and feeling. Final thing, fuel economy is poor at 32mpg (it should do 38mpg)

I've changed the airfilter (made no difference) and changed sparkplugs (made no difference old ones were good condition)

When changing the sparkplugs I noticed that cylinders chambers the spark plugs are in on 1 and 4 were really clean but 2 and 3 were rusty and the coil packs on 2 & 3 had orange/brown dust on them. There was slight wetness around the top of cylinder 2 chamber. And the coil pack boot on 4 was split.

Does anyone know the cause of the rust/brown dust? leaking cylinder head?
Also would the split in coil pack boot cause the misfire/poor running?
Any others had similar problems resolved on fords or volvos?

Thanks

MC.