Edema has many possible causes: 1  Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. 2  Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
Cars with nitrous-equipped engines can be identified by the purge of the delivery system that most drivers perform prior to reaching the starting line. A separate electrically operated valve is used to release air and gaseous nitrous oxide trapped in the delivery system.
Quick Answer. The canister purge solenoid valve is a container located inside the engine bay that houses fuel vapors to be recycled back into the combustion system when necessary. It is normally mounted on the firewall of the engine compartment. Continue Reading.