Hyundai Tucson: Fuel Tank
Component Location
- Fuel tank
- Canister
- Vapor hose
- Ventilaton hose
- Fuel filler hose
- Fuel tank air filter
- Leveling hose
- Fuel Level Sender (FLS)
- Fuel pump
- Fuel filter
- Fuel pressure regulator
- Fuel Perssure Sensor (FPS)
High Pressure Fuel Line
- High Pressure Fuel Pump
- High Pressure Fuel Pipe
- Delivery Pipe
- Injector
WARNING
In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel. So don't do any repair work right after engine stops.
Fuel Pressure Test
- Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
WARNING
When removing the fuel pump relay, the Diagnostic Trouble Code (DTC) will be occurred. Therefore delete the code with the diagnostic tool after "Release Residual Pressure in Fuel Line" work.
- Install the Special Service Tool (SST).
(1) Disconnect the fuel feed tube from the delivery pipe.
WARNING
There may be some residual pressure even after "Release Residual Pressure in Fuel Line" work, so cover the hose connection with a shop towel to prevent residual fuel from spilling out before disconnecting any fuel connection.
(2) Install the special service tool for measuring the fuel pressure in between the fuel feed tube and the fuel delivery pipe (Refer to the figure below).
- Inspect fuel leakage on connections among the fuel feed tube, the delivery pipe, and the SST components with IG ON.
- Measure Fuel Pressure
(1) Start the engine and measure the fuel pressure at idle.
Fuel Pressure : 480 - 520 kPa (4.9 - 5.3 kgf/cm , 69.6 - 75.4 psi)
WARNING
If the fuel pressure differs from the standard value, repair or replace the related part (Refer to the table below).
(2) Stop the engine, and then check for the change in the fuel pressure gauge reading.
Standard Value : The gauge reading should hold for about 5 minutes after the engine stops
WARNING
If the gauge reading should not be held, repair or replace the related part (Refer to the table below).
(3) Turn the ignition switch OFF.
- Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
WARNING
When removing the fuel pump relay, the Diagnostic Trouble Code (DTC) will be occurred. Therefore delete the code with the diagnostic tool after "Release Residual Pressure in Fuel Line" work.
- Test End
(1) Remove the Special Service Tool (SST) from the fuel feed tube ant the delivery pipe.
(2) Connect the fuel feed tube and the delivery pipe.
READ NEXT:
Release Residual Pressure in Fuel Line
WARNING
There may be some residual pressure even after "Release Residual
Pressure in Fuel Line" work,
so cover the hose connection with a shop towel to prevent residual fuel from
spilling out before
disconnecting any fuel connection.
Fuel pump service
Inspection
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the fuel pump assembly.
(Refer to - "Removal" Procesures)
Using an ohmmeter, measure the resistance between terminals 1 and 6 of
sender
Fuel pump service -
Installation
Installation
Install in the reverse order of removal.
Removal
Remove the fuel pump.
(Refer to Fuel Delivery System - "Fuel Pump")
Disconnect the fuel sender connector (A).
Release the fixing hook (A) and then remo
SEE MORE:
Vehicle parasitic current inspection
Inspection
Using the Ammeter
Turn the all electric devices OFF, and then turn the ignition switch OFF.
Close all doors except the engine hood, and then lock all doors.
(1) Disconnect the hood switch connector.
(2) Close the trunk lid.
Starting System- Description
The starting system includes the battery, starter, solenoid switch, ignition
switch, ignition lock switch,
connection wires and the battery cable.
When the ignition key is turned to the start position, current flows and
energizes the starter
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
