This procedure covers removal and replacement of the valve cover gasket on the 2015 Kia Forte 1.8L I4 engine to address oil leaks from the valve cover area.

Warnings

Tools required

Parts

• Valve cover gasket × 1 — Use OEM specification
• Spark plug tube seals × 4 — Use OEM specification
• PCV valve grommet (if deteriorated) × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and allow engine to cool completely (minimum 2 hours).
2. Disconnect negative battery terminal to prevent accidental ignition system activation.
3. Remove engine cover by pulling upward (friction fit).
4. Take photos of ignition coil and wiring harness routing for reassembly reference.

Procedure

1. 1

   Remove ignition coils
   Disconnect the electrical connectors from all four ignition coils by pressing the release tab. Remove the mounting bolt from each coil using a 10mm socket. Pull each coil straight up and out of the spark plug tube. Keep coils in order if reusing.
   Torque spec

   Ignition Coil Bolts8 Nm (6 lb-ft)
2. 2

   Disconnect breather hoses and harness
   Disconnect the PCV hose and breather hose from the valve cover by releasing the clamps or pressing the quick-disconnect tabs. Unclip any wiring harnesses attached to the valve cover or routed across it. Move all hoses and wiring aside to gain clear access to the valve cover bolts.
3. 3

   Remove valve cover bolts
   Remove all valve cover bolts in a crisscross pattern starting from the outside and working inward. There are typically 10-12 bolts around the perimeter. Use a 10mm socket with extensions as needed to access all bolts. Keep bolts organized for reinstallation.
   Torque spec

   Cover Bolts15 Nm (11 lb-ft)
4. 4

   Remove valve cover
   Gently tap the valve cover with a rubber mallet or carefully pry at designated pry points (NOT at gasket sealing surfaces) to break the seal. Lift the valve cover straight up and away. If resistance is felt, check for any missed bolts or hoses still attached.
   ⚠Do not pry between the valve cover and cylinder head sealing surfaces as this will cause damage requiring resurfacing.
5. 5

   Remove old spark plug tube seals
   Use pliers or a seal removal tool to carefully pull the old spark plug tube seals from the valve cover. These are press-fit into the four spark plug tube openings in the valve cover. Inspect the tubes for any oil accumulation indicating the seals were leaking.
   Torque spec

   Spark Plug Tube Seals0 Nm (0 lb-ft)
6. 6

   Clean all mating surfaces
   Using a plastic gasket scraper, remove all old gasket material from both the valve cover and cylinder head sealing surfaces. Be extremely careful not to gouge or scratch the aluminum surfaces. Clean thoroughly with brake cleaner and lint-free rags. Ensure no debris falls into the engine - stuff clean rags into the cam chain area if needed.
   ⚠Never use metal scrapers on aluminum surfaces as gouges will cause permanent oil leaks.
7. 7

   Install new spark plug tube seals
   Press the new spark plug tube seals into the valve cover by hand or using a socket that matches the outer diameter of the seal. Press until fully seated and flush with the valve cover surface. Ensure seals are oriented correctly with the seal lip facing downward into the spark plug tubes.
   Torque spec

   Spark Plug Tube Seals0 Nm (0 lb-ft)
8. 8

   Install new valve cover gasket
   Position the new valve cover gasket onto the valve cover, ensuring it seats properly in the valve cover groove. The gasket should fit snugly without any gaps or misalignment. Do not apply any additional sealant unless specified by the gasket manufacturer - most modern gaskets are installed dry.
9. 9

   Install valve cover
   Carefully lower the valve cover with new gasket onto the cylinder head, ensuring alignment with all bolt holes and that no hoses or wiring are pinched. Verify the gasket stays in position and does not shift during installation.
10. 10

    Torque valve cover bolts in sequence
    Install all valve cover bolts finger-tight first. Then torque in sequence starting from the center and working outward in a crisscross pattern. Torque all bolts to 10.0 Nm (7.0 lb-ft) using a torque wrench. Do not overtighten - this is a critical specification for proper gasket sealing without crushing.
    ⚠Overtightening valve cover bolts is the most common cause of immediate gasket failure and oil leaks.
    Torque spec

    Cover Bolts15 Nm (11 lb-ft)
11. 11

    Reinstall ignition coils
    Apply a small amount of dielectric grease to the inside of each spark plug boot if available. Insert each ignition coil back into its respective spark plug tube, ensuring it seats fully onto the spark plug. Install and torque the mounting bolt to 8.0 Nm (6.0 lb-ft). Reconnect all electrical connectors until they click into place.
    Torque spec

    Ignition Coil Bolts8 Nm (6 lb-ft)
12. 12

    Reconnect hoses and harnesses
    Reconnect the PCV hose and breather hose to the valve cover fittings, ensuring clamps or quick-disconnects are fully secured. Reclip all wiring harnesses to their original positions using your reference photos. Ensure no hoses are kinked or pinched.

Reassembly

1. Reinstall engine cover by aligning mounting grommets and pressing down firmly until seated.
2. Reconnect negative battery terminal and ensure it is tight.
3. Check that all tools and parts have been removed from the engine bay.

Verification

• Start the engine and inspect the valve cover for any oil leaks while engine is running.
• Allow engine to reach operating temperature and inspect again for leaks.
• Listen for any unusual noises indicating misrouted hoses or loose components.
• Check engine bay after first 50-100 miles of driving to confirm no oil seepage from valve cover.

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