The engine is blocked

Hello everyone, I have a problem with my engine, I was trying to start my solediesel engine and after turning perfectly well, that was blocked that was the Saturday and today I have tried to turn manually and I can turn it to the opposite direction that makes it turn the starter engine and turn perfectly until it comes to block, while I turn something we hear something strange in the injection pump, so I think the injection pump has something to do. You know some that can happen to him or if someone has happened to him. (I hope opinions please)

So you say the engine is struck because it is out of point and caught the valves, this is why you say, if you have noise in the pump it is that it is bad the bearing or disassembles something and jump your teeth, but if your vehicle is equipped with oil depressant at the exit of the cracking cams because the exentric one can be crooked and it is traced, this happens to the renaults,