Cold Engine Control Pressure Test
- Install pressure gauge and valve in fuel line between fuel distributor and control pressure regulator. See TEST EQUIPMENT HOOK-UP in this article. Valve assembly should be on control pressure regulator side of gauge.
- Turn ignition on. With fuel pump running, bleed and then OPEN valve. Disconnect control pressure regulator. Start and run engine at idle for a maximum of one minute.
- Note control pressure and compare to graph. See Fig 1. At about 68°F (20°C), pressure should read between 18-24 psi (1.3-1.7 kg/cm2
). If pressure does not read within specifications, replace control pressure regulator.
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