Check fuel pressure
WARNING: This page is about a different variant/trim than selected.
NOTE:
- Be cautious that Fuel is explosive and an empty fuel tank can still contain explosive gases. When working on fuel system make sure to supply adequate ventilation to the work area. Do not smoke, and keep sparks and open flames away.
- IG "OFF". Remove Fuel Pump Fuse (20A).
- Start engine and wait until it stalls.
- IG "OFF". Install Fuel Pump Fuse (20A).
- Install the fuel pressure gauge to the delivery pipe with the fuel pressure gauge adaptor.
- Activate the fuel pump, and with fuel pressure applied, check that there is no fuel leakage from the pressure gauge or connection part.
- Measure the fuel pressure at idle.
Specification: 400 ~ 600 kPa (4.07 ~ 6.12 kg/cm2 , 58 ~ 87 psi)
- Is the measured fuel pressure within specifications?
YES
- Go to next procedure.
NO
- Repair or replace according to the below table. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
| Condition | Possible Cause |
|---|---|
| Fuel Pressure is too low | Fuel filter, fuel pressure regulator, in-tank fuel hose or the fuel pump, Fuel pump control module (FECM) |
| Fuel Pressure is too high | Fuel pressure regulator, hose or pipe, Fuel pump control module (FECM) |