Check Fuel Pressure
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
1. Be cautious fuel is explosive and an empty fuel tank can still contain explosive gases. When working on fuel systems make sure to supply adequate ventilation to the work area. Do not smoke, and keep sparks and open flames away.
2. The fuel system remains under pressure when the engine is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.
2. The fuel system remains under pressure when the engine is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.
- Disconnect Fuel Pump fuse in Junction Box with ignition switch turned "OFF".
- Start engine and wait until it stalls.
- Connect Fuel Pump fuse with ignition switch turned "OFF".
- Install the fuel pressure gauge to the delivery pipe with the fuel pressure gauge adaptor. (Refer to FUEL PRESSURE TEST )
- Activate the fuel pump, check that there are no fuel leaks from the pressure gauge or fuel system.
- Measure the fuel pressure at idle.
Specification : 343 ~ 363 kPa (3.5 kgf/cm2 , 49.7 psi)
- Is the measured fuel pressure within specifications?
YES
- Clear DTC and Test-drive under prerequisite condition. After the road test, If DTC P017100 is set, go to "SYSTEM INSPECTION " procedure again. If not, troubleshooting is completed.
NO
- Repair or replace according to the table below. 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 Pressure is too high Fuel pressure regulator, hose or pipe