Is there any certian piston or is it random. I ask cause I have a tapping noise coming from the back piston on the pass. side.

So I guess my ? is: what is more common from missing gears or over reving piston slap or a bent rod cause thats the only thing I think I've done is over reved and missed a few gears.

the more imput the better.

Thanx James

BTW the car has 54xxx miles on it