hello, have a problem which I have already posted in the Astras g forum, but need extensive answers to the problem. so before unfurling 6 weeks, I made a service at the Astra g of my sister (parts of steel pit), i.e. oil change, timing belts etc. whole 2 weeks after that, she started the car in the morning which went out again shortly afterwards, , , , ,, cause: the oil pump has got stuck and is broken. I completely repaired the engine and resealed it (oil pump with new oil and filter, cylinder head gasket, oil tank sealed etc.) I then drove 4 weeks by car, and could not detect any problems. 4 days ago my sister drove to Dresden and back, while her engine literally flew around the ears,, having picked up the car yesterday. at the Astra are 2 holes in the engine of one in the oil tank and one in the block,,, a cylinder has said goodbye and has migrated outside, the storage shell from the pleuel is burned. the oil pu mpe has promoted to the last, and all other cylinders are iin ordung. what can have caused this, this thing gives me a rattle. gives opel eventuel kulanz to the motor? vehicle is an astra g with a z16se motor. year of construction 2003. engine has 84ps thanks already in advance. mfg olli.