I have a T5 130TDI...well it has been in garage for over year! Had engine re-build but revved high, smoked and stopped after 200 miles. Have discovered that the engine oil is filling up with deisel. My mechanic believed it could only mix in the fuel pump (also had problem starting first thing a.m.- fuel draining back into tank also implying crack in pump) or cracked injector. Have fitted replacement fuel pump and now has removed and tested injectors but no faults. Does anyone have any other suggestions or experienced similar problem. Am running out of options!!.. and cash! HELP!