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Hyundai Tucson: Fuel Delivery System - Fuel Tank

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Control - Fuel System / Fuel Delivery System - Fuel Tank

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 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

 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

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 Engine Oil - Removal and Installation

Disconnect the battery negative terminal.  Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover") Drain the coolant. (Refer to Cooling System - "Coolant") D

 48V Battery System - Removal

Turn the ignition switch OFF and disconnect the battery (-) terminal. Remove the luggage board (A). Disconnect the BMS ECU extension wiring harness connector (A). Disconnect the inverter power cables (A). Tightening torque

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