m-tec bmw 325 ci spo
well ive just had my 172 engine rebuilt and it turns out my pumps fucked my oil light and service light keeps coming on had a mechanic take a look and he rekons the pumps on its way out. if you rev it to about 3k and let the revs drop the engine starts knocking. now how much is a new pump or do they do a rebuild kit and how much of an arse is it to change ?