Hi I have the following problem with my B Corsa 1.4 16V Year of construction 1996 126.000km – Burns a lot of oil ( 2 -3 L to about 400km) but only a week before he has already swallowed en bissel oil there I have ma every month 0.5L after tilted – engine jerks when giving gas approx. 2 weeks (times more times less) – hardly suit – Since Friday he runs in my opinion only on 3 instead of on 4 cylinders, but there is no expert the engine noise has changed anyway hears a n wien Tractor. I once looked in the cooling water and on the lid of the oil whether there should be such foam deposited a sign for a defective cylinder head gasket but could not discover anything. I nevertheless suspected the cylinder head gasket. If the gasket is what can you expect so pricey? What else could it be? gruss Fritte