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Adjusting Combustion via Injection Pump

Model: (Various brands) Various
Part: Fuel pump

Pressure regulators suitable for our purpose are readily available on the market, often sold together with a pressure gauge. Using this tool, to optimise the atomisation in the engine, you can increase the pressure by 0.3 - 0.6 bar (not more, otherwise you will overload the circuit and the injectors). Mount the regulator on a test rail/collector and measure the initial working pressure with the pressure gauge. Then, secure the regulator in a vice as shown in the video and tighten it slightly: perform this operation gently, tightening a little at a time, then remount the regulator on the rail to see how much the working pressure has increased.

Updated on 3 May 2026 by ScegliAuto

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by ScegliAuto

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