Audi q5 2009 injector and Alternator and auxiliary belt work gone wrong Hi all so I had a injector go on my audi q5 2009 and had a mechanic to put a new injector in it and a Alternator and auxiliary belt so after the work be done I take it for a drive did about 2miles than Start it to make Allowed tapping noise so get hold of mechanic and he's said get it home than he will come and have a look at it so start my journey again but before I get back home properly do 5/6 miles a Warning light saying oil too hot over turn engine off before I Even had the chance too Pullover a big bang and engine cuts out so gets out car oil everywhere he comes and has a look the pistol has cracked and put a hole in the block Either on chamber 3 or 4 now what I need to no is how dose a piston just do that and if the mechanic do something to it or is just bad luck
