Alllright, I've got an '86 Camaro with a 350 in it. My problem is, the PCV is VERY noisy. First I didn't know what was causing the noise. It sounded like what a rocker would sonud like if it hit the valve cover and I checked that and that wasn't it. I checked a feww other things, and then finally realized that it was the PCV by pulling it off and noticing the sound went away and then came bakc when I put it in.

My question is, are all PCV's this noisy? Does mine need to be replaced?

Thanks.

 

That PCV valve should not be making the noise you describe. Quick way to check the valve is to shake it and the ball in valve should rattle. If you hear it its OK.

 

The ball does move around when I shake it.

 

Put a vacuum guage on it and make sure you have steady vacuum readings. If that checks out okay, then examine the hose connections at both ends. I had a pcv on a Dodge making a bunch of noise and it turned out to be a loose connection at the carburetor causing the valve to open and close quickly and rattle.

 

Let me guess.... it rattles at idle, right? Almost like a "buzzing" kinda noise?

If so, that's a very common problem. If a fresh valve of the same type doesn't solve your problem then use one for this application: 1991 Camro with 3.1L V6 engine.

I don't know what specifically is different about it but I have used it MANY MANY times to solve "rattling" PCV valve problems. It works pretty much like magic. Don't worry that it's designed for a V6, it works just great on every V8 application I've ever used it on, too.