Vinegar's acidity is what makes it such a good cleaner. Because vinegar is so acidic, it can counteract some icky buildups. It can dissolve away soap scum, brines left by hard water, and glue left behind by stickers.
The PCV valve is a control device which sends partially burned gases that come from the engine's crankcase to the combustion chamber. Its name, PCV means Positive Crankcase Ventilation and is one of the oldest and most used emission control devices.he PCV valve is a control device which sends partially burned gases that come from the engine's crankcase to the combustion chamber. Its name, PCV means Positive Crankcase Ventilation and is one of the oldest and most used emission control devices.
The PCV valve connection on a Ford F-150 4.2l is located on top of the passenger side valve cover, towards the firewall. It is somewhat difficult to see and reach.It helps to remove the fusebox cover mounted on the firewall. On my 2002 F-150 4.2L it is in the side of the intake manifold right behind the throttle body. All car engines have a PCV valve and it is located on top of the motor's valve cover. There is a va â¦ cuum line attached to it. It pulls out of the valve cover and if you shake it, you should hear a marble knocking inside it. If you shake it and don't hear anything, it's bad.