ok so just changed the cambelt and water pump (old one came out in two pieces) and now when i try to start the car it will not start but does turn over however after turning over for about 15 seconds it beeps and flashes up oil pressure stop engine, so have i messed up the timing or is it something else? its a mk4 golf gt tdi 110
Sounds like you have got the injector pump timing wrong... Did you use a set of locking pins and lock it all before you took the old belt off?