My Ka Bj 97(New Nock is already inside) has had strange symptoms lately When starting, i.e. when turning the key, the starter did not manage to turn the engine (only phasewise). After repeated attempts, he then started without a problem after a cracking of the engine. Battery has been replaced. Did not help anything. Yesterday then the showdown!!! First blocked again.! Then had turned!! Then jumped for so 2 seconds then a huge Knal l from the engine compartment and Now the engine is running but it hammers to such an extent that one would like to suspect a skin with every turn midd nem suggestion hammer on the engine block. Has now someone still guessed or trost have not looked at me the car yet more closely everything from my wife tell. Thank you in advance.