Integra L4-1678cc 1.7L DOHC (VTEC) FI (1992)
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Fuel Pressure Regulator: Description and Operation
Description
The fuel pressure regulator maintains a constant fuel pressure to the injectors. When the difference between the fuel pressure and manifold
pressure exceeds 3.0 kg/cm2, 43 psi (B17A1 engine: 3.5 kg/cm2, 50 psi), the diaphragm is pushed upward, and the excess fuel is fed back into the
fuel tank through the return line.