Engine Noise

Hey, i'm fixing up a '95 Chevy Cavalier Sedan LS and i have a problem with the engine. With every revolution of the crankshaft, there is a small noise. We even took off the oil cap and the noise got louder. I personally don't know what it is, but my dad thinks that it's a bad piston bearing around the crankshaft. Does anybody have any clues as to what it could be? Thanks

Mike

YOu need to be more specific.

we really don't know how to explain the noise, but my dad said it sounds like one of the bolts came loose that is holding a piston onto the crankshaft, and it's knocking against the top of the oil pan

hmmm.... if you think that then drop the oil pan. Rotate the engine forwards, and see if anything is hitting or loose for your matter. But i would have it put on a lift with the engine running and see to be sure thats where the noise is comming from.