294200-0300 Fuel Pressure Regulator Valve for TOYOTA AURIS HIACE HILUX LAND CRUISER

 A. Description 

PART NO: 294200-0300

PART NO: 294200-02541M

294200-0300 CAN BE USED TO  FIT ON FOLLOWING MODEL :

B.Competitive Advantage 

C. International Trade

Our current market has covered most parts of the world, such as

Europe,

US ,

South America,

MiddleEast,

South East Asia.

D.Basic Operation

fuel pressure regulators come in various shapes and sizes but their purpose is the same- to hold the fuel pressure at a certain differential above the intake manifold pressure. The inner mechanism usually consists of a sealed diaphram chamber, a spring, a diaphram, bypass valve and a manifold pressure reference port. The valve is connected to the diaphram and the spring pushes against the diaphram from the manifold pressure side. The spring pressure determines the static fuel pressure. If there is vacuum on the port, say at idle, this reduces the effective spring pressure acting on the diaphram and reduces the fuel pressure under vacuum conditions. If there is pressure on the port, such as under boost, this effectively increases the spring pressure, thus fuel pressure. Most OE regulators use a one to one ratio. At one psi of boost, it would add one psi of fuel pressure. This way there is always a constant pressure differential across the fuel injector. Most regulators have a static pressure of between 38 and 44 psi.

E.Relieving Pressure with the Fuel Pressure Regulator

Disconnect the negative battery cable using a wrench. This will prevent sparks, which could ignite fuel and fuel vapors.
Locate the fuel pressure regulator on the fuel rail. The rail is mounted along the top area of the engine. Make sure the regulator is vacuum operated.
With your hand, remove the vacuum hose from the top of the fuel pressure regulator.
Connect a hand-operated vacuum pump to the top of the pressure regulator.
Apply about 16-inches Hg of vacuum to the regulator to push the fuel in the lines back into the fuel tank.