The Fuel Pressure Regulator is a really important component in the Toyota RAV4 range which governs fuel pressure levels in the electronic fuel injection systems. This is normally installed at the fuel rail and function on the spring and diaphragm system that controls fuel delivery on the basis of engine vacuum. During non-use, this causes a higher vacuum, thus a higher flow back of fuel whereas during usage, it decrease this vacuum, preventing it from robbing pressure that the engine needs. Years of RAV4 models have incorporated pressure reducing and back-pressure regulators as their fuel pressure regulators. The primary distinction lies in their operational mechanisms: There are two main kinds of pressure regulators: pressure reducing regulators that reduces the input pressure and back-pressure regulators that maintains the inlet pressure. Although OEM regulators are proficient under normal operation, changes for instance raising the injectors' size or installing high volume pumps may require adjustable after market models for efficiency.
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