Attention. Observe fire safety regulations.
When the fuel pressure is not normal, check the fuel pump for proper operation, and then check the pressure regulator.
1. Check the vacuum tube for cracks, cuts and disconnection.
2. At idle speed, disconnect the vacuum tube and install a clamp on it. Make sure the fuel pressure increases.
- Standard pressure: 320-370 kPa (3.3-3.8 kg/cm²)
If the pressure does not increase, restore the vacuum tube, lightly squeeze the fuel return hose from the pressure regulator to the fuel tank 2-3 times, and measure the fuel pressure again. If the pressure does not return to normal, replace the pressure regulator.
Do not damage the fuel return hose when squeezing it. If there are cracks on the hose, replace it with a new one.