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 is located on the valve cover on the rear bank (closest to the firewall) on the throttle body side. if you look just behind the intake manifold you'll se â¦ e a black plastic tube sticking up out of the valve cover. that is you PCV valve.ind the PCV valve and first step remove the black hose that runs from the valve to the manifold. On the side of the manifold t here is a vacum hose adjacent to the PCV hose that can be removed for better access.