What Are Fuel Pressure Regulators?
Fuel pressure regulators are components in car engines that regulate the pressure of the fuel supplied to the engine. Typically located between the fuel injection system and the gasoline tank, these regulators contain a spring that presses on a diaphragm valve connected to the gasoline tank. They adjust fuel pressure by controlling the opening and closing of this valve through the spring’s action.
The pressure in the intake manifolds, which supply air to the engines, is usually lower than the atmospheric pressure. A strong vacuum in the intake manifold can lead to an excessive fuel supply, increasing fuel pressure. Fuel pressure regulators manage this by opening the valve connected to the gasoline tank, reducing the fuel pressure to maintain optimal engine performance.