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.
by Pat Goss. One of the most overlooked systems on the car is the PCV system, Positive Crankcase Ventilation. And most people make some serious mistakes because they think the PCV valve, such as I have here in my hand a couple of different styles, the PCV valve is all there is.ell, thatâs wrong. Thereâs a lot more to a PCV system than just the valve. What the PCV system does is it draws fumes from the oil pan back into the intake manifold and burns them to reduce emissions and to protect the inside of the engine.