What does an engine knock actually sound like?
I know that a bad engine knock sounds like, but im unsure about that it sounds like in the beginning. The only engine i have killed was a chevy 305 and it went from fine to BANG BANG BANG and shortly there after when reving it, it through a rod throught the block (it was a souped up camaro). My engine i noticed has a small almost tick to it, Im pretty sure its not the pcv valve. But to the question does a knock always sound heavy, or can it start as a light tick and became a horrible heavy knock?? Also if my engine is goin bad shouldnt there be metal in the oil?? Must i drain the oil from the pan or will there be some on the oil on the dip stick??