EGR Tube

This procedure covers the removal and replacement of the EGR tube on the 2016-2024 Hyundai Tucson with the 2.5L I4 engine, including necessary heat shield removal and proper sealing.

Warnings

Tools required

Parts

• EGR tube assembly × 1 — Use OEM Hyundai part
• EGR tube to manifold gasket × 1 — Use OEM specification
• EGR tube to valve gasket × 1 — Use OEM specification

Preparation

1. Ensure engine is completely cold to the touch (allow at least 2 hours cooling time after running)
2. Disconnect negative battery terminal and wait 3 minutes for system shutdown
3. Remove engine cover by pulling upward on mounting grommets
4. Spray all EGR tube mounting bolts and exhaust connections with penetrating oil and allow 15 minutes soak time

Procedure

1. 1

   Remove upper heat shield
   Locate the heat shield covering the EGR tube on the passenger side of the engine. Remove the heat shield mounting bolts using a 10mm socket. There are typically 3-4 bolts securing the shield. Carefully remove the shield and set aside.
   Torque spec

   Heat Shield Bolts10 Nm (7 lb-ft)
2. 2

   Disconnect electrical connector
   Locate the electrical connector on the EGR valve. Press the tab on the connector and pull straight away from the valve. Move the wiring harness aside to provide working clearance.
   ⚠Do not pull on the wires themselves. Press the release tab fully before attempting to separate the connector.
3. 3

   Remove EGR valve mounting bolts
   Using a 12mm socket with extension, remove the two mounting bolts securing the EGR valve to its mounting bracket. Support the valve and tube assembly as you remove the last bolt to prevent it from dropping.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)
4. 4

   Disconnect EGR tube from intake manifold
   Locate the EGR tube connection point at the intake manifold. Remove the two flange bolts using a 14mm socket. You may need a 10" extension to reach the lower bolt. Once bolts are removed, carefully separate the tube from the manifold. Remove and discard the old gasket.
   ℹ️The lower bolt may be difficult to access. Work from below the vehicle if necessary for better access angle.
   Torque spec

   Exhaust Flange Bolts45 Nm (33 lb-ft)
5. 5

   Remove EGR tube from exhaust manifold
   At the exhaust manifold connection point, remove the two exhaust flange bolts using a 14mm socket. The tube may be stuck due to carbon buildup. Gently twist and pull to separate. Remove and discard the old gasket.
   ⚠Do not pry against the exhaust manifold surface as this can cause warping. Use gentle twisting motion to break carbon seal.
   Torque spec

   Exhaust Flange Bolts45 Nm (33 lb-ft)
6. 6

   Remove EGR tube assembly
   Carefully maneuver the EGR tube assembly out of the engine bay. It may be necessary to rotate and angle the tube to clear surrounding components. Note the routing position for reinstallation.
   ℹ️Take a photo of the tube routing before removal if this is your first time performing this repair.
7. 7

   Clean mating surfaces
   Using a gasket scraper and wire brush, thoroughly clean all gasket mating surfaces at the intake manifold, exhaust manifold, and EGR valve connection points. Remove all carbon deposits and old gasket material. Wipe surfaces clean with a lint-free cloth.
   ⚠Do not allow debris to fall into the intake manifold opening. Cover the opening with a clean shop towel during cleaning.
8. 8

   Prepare new EGR tube
   Unpack the new EGR tube assembly. Install new gaskets at both the exhaust manifold and intake manifold connection points. Apply a thin coat of anti-seize compound to the threads of all exhaust flange bolts.
   Torque spec

   Exhaust Flange Bolts45 Nm (33 lb-ft)
9. 9

   Install EGR tube to exhaust manifold
   Position the new EGR tube assembly into the engine bay following the original routing path. Align the exhaust manifold flange first and install the two exhaust flange bolts finger-tight. Do not torque at this time.
   Torque spec

   Exhaust Flange Bolts45 Nm (33 lb-ft)
10. 10

    Connect EGR tube to intake manifold
    Align the intake manifold flange connection and install the two flange bolts finger-tight. Ensure the gasket is properly seated and the tube is not binding at either connection point.
    Torque spec

    Exhaust Flange Bolts45 Nm (33 lb-ft)
11. 11

    Torque all EGR tube connections
    Using a torque wrench, first torque the exhaust flange bolts to specification in a cross-pattern. Then torque the intake manifold flange bolts to specification in a cross-pattern. This ensures proper sealing at both ends.
    ⚠Follow the cross-pattern tightening sequence to prevent warping the flanges and ensure even gasket compression.
    Torque spec

    Exhaust Flange Bolts45 Nm (33 lb-ft)
12. 12

    Install EGR valve
    Position the EGR valve onto its mounting bracket and install the two mounting bolts. Torque the mounting bolts to specification using a torque wrench.
    Torque spec

    Mounting Bolts27 Nm (20 lb-ft)
13. 13

    Reconnect electrical connector
    Reconnect the electrical connector to the EGR valve. Push firmly until you hear and feel a positive click indicating the connector is fully seated.
    ℹ️Verify the connector locking tab has engaged properly by giving a gentle tug on the connector body.
14. 14

    Reinstall heat shield
    Position the upper heat shield back into place and install all heat shield bolts. Torque to specification. Ensure the shield is not contacting the EGR tube directly.
    Torque spec

    Heat Shield Bolts10 Nm (7 lb-ft)
15. 15

    Final inspection and battery reconnection
    Verify all connections are tight and properly torqued. Ensure no tools or parts were left in the engine bay. Reinstall the engine cover. Reconnect the negative battery terminal.
    ℹ️The check engine light may illuminate initially as the ECU relearns the EGR system parameters. This should clear after several drive cycles.

Reassembly

1. Install all components in reverse order of removal
2. Ensure all gaskets are properly positioned before torquing fasteners
3. Verify heat shield clearance to prevent contact with EGR tube during operation

Verification

• Start the engine and listen for exhaust leaks at the EGR tube connections. No hissing or ticking should be present
• Allow engine to reach operating temperature and verify no leaks develop when components expand from heat
• Use a scan tool to verify EGR system operation shows no fault codes and proper flow rates
• Perform a test drive and confirm smooth idle and no check engine light illumination
• After the first 50 miles of driving, re-check all EGR tube connection bolts for proper torque as thermal cycling may cause minor settling

More procedures for this vehicle