You said you changed the PCV because it didn't rattle. It could have benn stuck closed. Did you get the correct PCV valve for your engine. If you get the wrong one it can suck oil up into the carb/intake. If you have a different cam & you still run the factory PCV you again could have the wrong one in there because it may not be pulling the same amount of vacum. Check your new PCV now to see if you have any oil in the line or the PCV itself. If you have a different cam you may be pulling a less amount of vacum letting the oil in. You may have to do some research to see what PCV valve you may have to use for the cam you have now. If it's more blace check the float level first if the carb has just been rebuilt.
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