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.
Some engines use a fixed orifice rather than a variable-orifice PCV valve. Component placement. The crankcase air outlet, where the PCV valve is located, is generally separated as widely as practical from the crankcase air inlet. For example, the inlet and outlet are frequently on opposite valve covers on a V engine, or on opposite ends of the one and only valve cover on an inline engine.