MX-5 Miata L4-1.8L DOHC (1996)
Fuel Pressure: Testing and Inspection
Fuel Line Pressure Test
FUEL LINE PRESSURE INSPECTION
WARNING: Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also
irritate skin and eyes. To prevent this, always complete the "Fuel Line Safety Procedures".
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Disconnect the negative battery cable.
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Install a fuel pressure gauge between the fuel pipe and the fuel main hose. (Install clamps as shown.)
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Connect the negative battery cable.
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Connect data link connector terminals F/P and GND by using a jumper wire.
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Turn the ignition switch to ON.
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Measure the fuel line pressure.
Fuel line pressure: 265 - 313 kPa (39 - 45 psi)
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Pressure low: Check fuel pump maximum pressure. If as specified, fuel line or fuel filter might be clogged or restricted.
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Pressure high: Replace the pressure regulator
