Hyundai Sonata: Fuel Delivery System / Fuel Tank Repair procedures

Removal
1.
Release the residual pressure in fuel line.
(Refer to the Fuel Delivery System - "Release Residual Pressure in Fuel Line")
2.
Remove the rear seat cushion.
(Refer to Body - "Rear Seat Assembly")
3.
Remove the fuel pump service cover (A) in the trunk.

4.
Disconnect the fuel feed tube quick-connector (A).
5.
Disconnect the fuel pressure sensor connector (B).
6.
Disconnect the fuel pump control module (C).

7.
Lift the vehicle.
8.
Remove the main muffer.
(Refer to Engine Mechanical System - "Muffler")
9.
Support the fuel tank with a jack.
10.
Disconnect the fuel filler hose (A).
11.
Disconnect the vapor hose quick-connector (A).

12.
Disconnect the fuel tank pressure sensor extension connector (A).

13.
Remove the fuel tank bands (A) installation nuts.

14.
Remove the fuel tank after removing the fuel tank band (A) as below.

Installation
1.
Install in the reverse order of removal.

Fuel tank band installation nut:
39.2 ~ 54.0 N.m (4.0 ~ 5.5 kgf.m, 28.9 ~ 39.8 lb-ft)

Repair procedures
Fuel Pressure Test (Low pressure system) 1. Release the residual pressure in fuel line. (Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line"). ...

Fuel Pump Repair procedures
Inspection [Fuel sender] 1. Turn the ignition switch OFF, and then remove battery (-) cable. 2. Remove the fuel pump assembly. 3. Using an ohmmeter, measure the resistance between termi ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components Location 1. PCV Valve2. Canister3. Purge Control Solenoid Valve (PCSV)4. Fuel Tank Pressure Sensor (FTPS)5. Canister Close Valve (CCV)6. Fuel Level Sender (FLS)7. Fuel Tank Air Filter8. Catalytic Converter (WCC+UCC) 1. PCV Valve2. Canister3. Purge Control Solenoid Valve (P ...

Hyundai Sonata LF 2014-2019 Service Manual: Accelerator Position Sensor (APS) Specifications
Specification AcceleratorPositionOutput Voltage (V)APS1APS2C.T0.7 ~ 0.80.29 ~ 0.46W.O.T3.85 ~ 4.351.93 ~ 2.18 ...

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