Malpassi Petrol King Fuel Pressure Regulator – 1.5–5 psi
The Malpassi Petrol King Fuel Pressure Regulator is ideal for cars equipped with carburettors and an electric fuel pump.
Electric fuel pumps typically provide a much higher pressure than required for a carburettor. The regulator ensures a steady and constant fuel flow under all driving and weather conditions.
Technical Specifications
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Adjustment Range: 1.5–5 psi
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Fittings: 8 mm
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Fuel Compatibility: Petrol / E10 / E85 & Diesel
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Width (including bracket): 83 mm
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Height: 60 mm
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Weight: 165 g
Benefits & Operation
The Malpassi Petrol King fuel pressure regulator is designed to optimize carburettor fuel delivery:
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Provides a stable fuel flow at all times, even with changes in temperature or ambient pressure.
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Standard fuel pumps can deliver up to 5 times the required pressure, which can cause overpressure, engine stalling, or fuel starvation. The regulator prevents these issues by reducing and regulating pressure.
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Ensures a perfect idle, fast and immediate engine start, and smoother driving.
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Optimises high-RPM engine performance by maintaining the correct pressure to the carburettor, with an additional safety margin depending on the needle valve size.












