Thread: Rebuilt engine will not run

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I don't think this pcv debate is helping 1warrior solve his problem. I may be wrong. I disqualified myself as an expert in the first line of my reply.
I know that a stock Chevy has an oil filler that screws on like a radiator cap and it has a gasket to keep it from drawing in air. Taking the cover off while it's running will change the idle speed but probably not cause it to run rough.
I just thought it was the easiest thing to check first as it doesn't require any tools to check it.
He does have the power brake and pcv reversed. perhaps taking them both off and plugging them with his thumbs will eliminate both of these things as the culprit.

Why is it that so many things can go wrong to make an engine run worse but I don't know of anything that can go wrong and make it run better?

I could go on forever but I have to go beat a dead horse.