hi. will try and keep this short and sweet but really could do with some help of what to do next. had a few problems with my car in the recent couple of weeks, at first it was my lambda, this then lead to the plugs, coil and ht leads, changed these a few times and had the car running ok for a couple of days until i was in the middle of now where and my car started missfiring badly complete loss of power, car even trying to jolt forwards and backward whilst while driving cutting out when the revs dropped but gets worst the higher i rev and im talking 2500 max, completly dangerous and i had to get home so i had to drive. when i got home and it became light i also notice alot of oil spilled all over the rocker cover around the filler cap and now my oil light flashes on every now and again. i have now changed plugs, leads coil and lambda again but the engine still idles very badly even if it is a hell of alot better than before extremely confused??