Hyundai Ioniq: Fuel Delivery System / Fuel Pressure Regulator. Repair procedures

Hyundai Ioniq (AE) 2017-2024 Service Manual / Engine Control/Fuel System / Fuel Delivery System / Fuel Pressure Regulator. Repair procedures

Removal

1.	Remove the fuel pump. (Refer to Fuel Delivery System - "Fuel Pump")

2.	Disconnect the fuel pump motor connector (A) and fuel sender connector (B).

3.	Press the fixing hook (A) with a driver and then remove fuel sender (B) in the arrow direction.

4.	Disconnect the fuel feed tube (B) after removing the fixing pin (A).

5.	Remove the head assembly (B) after releasing the fixing hooks (A).

6.	Remove the reservoir-cup (B) after releasing the fixing hooks (A).

7.	Disconnect the ground line (A).

8.	Disconnect the fuel pump motor connector (A).

9.	Disconnect the fuel pressure regulator (B) after removing the fixing pin (A).

Installation

1.	Install in the reverse order of removal.

Fuel Sender. Repair procedures

Removal1.Remove the fuel pump.(Refer to Fuel Delivery System - "Fuel Pump") 2.Disconnect the fuel pump motor connector (A) and fuel sender connector (B)...

Fuel Line. Repair procedures

Removal1.Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")2.Turn the ignition switch OFF, and then remove battery (-) cable...

Other information:

Hyundai Ioniq (AE) 2017-2024 Service Manual: Troubleshooting

Trouble ShootingIgnition System Symptom Suspect area Remedy Vehicle indicates Ready in dash, but engine will not run when requested by the HPCU (HEV module).Ignition coilInspect ignition coil, or replace as requiredSpark plugsInspect spark plugs, or replace as requiredIgnition wiring disconnected or brokenRepair wiring, or replace as requiredRough idleIgnition wiringRepair wiring, or replace as requiredIgnition coilInspect ignition coil, or replace as requiredEngine hesitates / poor accelerationSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as requiredIgnition wiringRepair wiring, or replace as requiredPoor mileageSpark plugs and spark plug cablesInspect spark plugs / cable, or replace as requiredCharging System Symptom Suspect area Remedy Charging warning indicator does not light with Start/Stop Button "ON" and Hybrid System off...

Hyundai Ioniq (AE) 2017-2024 Service Manual: General information

Basic Service SymbolsThere are five primary symbols used to complement illustrations. These symbols indicate the part to apply such materials during service. Symbol Meaning Do not reuse the part. Replace a new one...