Hyundai Tucson: High Pressure Fuel Line

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

  1. Release residual pressure in fuel line.

    (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")

  2. Turn the ignition switch OFF and disconnect the battery (-) terminal.
  3.  Remove the air cleaner assembly.

    (Refer to Engine Mechanical System - "Air Cleaner")

  4. Remove the engine cover.

    (Refer to Engine Mechanical System - "Engine Cover")

  5. Remove the Purge Control Solenoid Valve (PCSV).

    (Refer to Engine Control System - "Purge Control Solenoid Valve (PCSV)")

  6. Separate the breather hose (A).

  1. Remove the high pressure fuel pump foam (A).

  1. Loosen the high pressure fuel pipe flange nut (A).

Tightening Torque : 29.4 - 35.3 N.m (3.0 - 3.6 kgf.m, 21.7 - 26.0 lb-ft)

  1. Loosen the function block mounting bolt (A).

Tightening Torque : 9.8 -11.8 N.m (1.0-1.2 kgf.rn, 7.2 - 8.7 lb.ft)

High Pressure Fuel Line- Installation


     High Pressure Fuel Line- Installation

    Install in the reverse order of removal. Install the high pressure fuel pipe as follows. (1) Completely pre-tighten the both side nuts (A) on high pressure tightening area of high pressure fuel pipe while keeping them vertically. (2) Ti

     High Pressure Fuel Line- Removal

    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. Relea

     Intelligent Manual Transaxle (IMT) System


     Cylinder head cover

    Removal Disconnect the battery negative terminal. Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover") Turn the crankshaft damper pulley so that No. 1 piston is at top dead center. (1)


    Symptom- Engine misfire with abnormal internal lower engine noises. Suspect area/ Remedy Loose or improperly installed drive plate(or fly wheel)./  Repair or replace the drive plate(or fly wheel) as required. Worn piston rings. (