What could a very loud tapping noise in a BMW 318i e36 engine be?
i have a very loud tapping noise in my BMW 318i e36 1993 engine.
its extremly loud on start up then drops down to very loud when
idling. the noise never goes away. I've had people say the engine
was about to throw a piston, i need a new engine, etc what could it
be and is it possible to fix?