Hightwrrr

Hi! I have a 2005 Skoda Fabia Mk1 6Y5, 54bhp petrol engine (with 40 of them gone to pasture), the engine is a BMD. Currently at 146 000km. The trouble I am having with this heap of soon to be nails is long: Here comes the short list: Sometimes I get a: - Cylinder 3 misfire - Fuel system to lean Checked and replaced all spark plugs And replaced the coils, twice. Changed the lambda probes, twice. Had the heap at my local garage, an all brand one, but they can not find anything wrong. Thinking of having it checked at a Skoda garage, but it cost more than I m willing to spend on the heap. If anyone can give me a hint/tip in the right direction it would be greatly appreciated! Henrik