2. Assemble the fuel pressure gauge adapter.
3. Remove the fuel pulsation damper and install the adapter and fuel pressure gauge.
4. Disconnect the vacuum tube from the pressure regulator and install a clamp on it.
5. Start the engine and measure the fuel pressure at idle speed.
- Standard pressure: 320-370 kPa (3.3-3.8 kg/cm²)
After taking measurements, disassemble the adapter, clean it from dirt and store it disassembled so that no foreign particles get in.
If the fuel pressure is different from the specified value, perform the following check.
Fuel pressure is above normal
Check the fuel return hose and tube for pinching or blockage.
Check the fuel pressure regulator (see below).
Fuel pressure below normal
Check for fuel leakage at the fuel supply line.
Check the fuel pressure regulator (see below).
Check the fuel filter for blockages.
Check the operation of the fuel pump (see below).
Article source on the website HondaBook