I just finished an exhaust system on the 340 dart and im now minus a couple big exhaust leaks. The new found silence has made me aware that my pcv valve makes a ton of rattling noise. Its a brand new valve. Do you think I should try another one? I have never heard a pcv valve make this much noise.
The ones from the parts stores seem to all rattle like you mention, I got a noisy Fram from AutoZone and I pitched it for one made by Standard, I think a v-180 off ebay. Do some searches, it's been discussed here in the past.