'23 T-Bucket Pickup
If you don’t have a PCV system pulling crankcase vapors you can expect a filthy engine compartment like we had before PCV systems. A PCV valve in one valve cover and a vented fill cap in the other will give negative pressure in the crankcase and prevent vapors from covering your engine with oil slime. Unless your engine has a bunch of blow by, you should be able to remove the filler cap and seal your hand over the filler hole while the engine is idling and feel the vacuum. If you don’t feel any vacuum and the PCV valve is good and has good vacuum to it, your engine needs freshened. Many years gone by I used a vacuum gauge that was used to check PCV efficiency. It plugged into the oil fill hole. Short version. Installing the PCV valve in a valve cover works better than putting it in the road draft hole. Just plug that hole by whatever means necessary.Yes, I removed this also. If I put breathers in both valve covers that should be plenty of vent??? Do I need a pcv valve too?