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Home >> Acura >> 2000 >> Integra GS-R Sedan L4-1797cc 1.8L DOHC (VTEC) MFI >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Fuel Pressure >> Testing and Inspection
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Fuel Pressure: Testing and Inspection

1. Relieve fuel pressure.
2. Remove the 12 mm banjo bolt from the fuel filter while holding the fuel filter with another wrench. Attach the fuel pressure adapter bolt, 12 mm and the special tool.
3. Start the engine. Measure the fuel pressure with the engine idling and the vacuum hose of the fuel pressure regulator disconnected from the fuel pressure regulator and pinched. If the engine will not start, turn the ignition switch ON, wait for two seconds, turn it off, then back on again and read the fuel pressure.

Pressure should be:

B18B1 engine: 270 - 320 kPa (40 - 47 psi)
B18C1, B18C5 engines: 320 - 370 kPa (47 - 54 psi)




4. Reconnect vacuum hose to the fuel pressure regulator.

Pressure should be:

B18B1 engine: 250 - 290 kPa (36 - 43 psi)
B18C1, B18C5 engines: 260 - 310 kPa (38 - 46 psi)

If the fuel pressure is not as specified, first check the fuel pump. If the fuel pump is OK, check the following:
- If the fuel pressure is higher than specified, inspect for:
- Pinched or clogged fuel return hose or line.
- Faulty fuel pressure regulator.
- If the fuel pressure is lower than specified, inspect for:
- Clogged fuel filter.
- Faulty fuel pressure regulator.
- Fuel line leakage.
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