This procedure covers the removal and replacement of the valve cover gasket on the 2018-2024 Toyota Camry 2.5L I4 engine, including ignition coil removal and proper sealing procedures.

Warnings

Tools required

Parts

• Valve cover gasket kit × 1 — Use OEM Toyota gasket kit
• Spark plug tube seals × 4 — Included in gasket kit or order separately
• Valve cover grommet seals × 1 — Included in gasket kit
• Spark plugs (if needed) × 4 — 90919-01253 or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely for at least 2 hours
3. Disconnect negative battery terminal and wait 3 minutes for airbag system to discharge
4. Remove engine cover by pulling upward on front and rear pull points
5. Have new gasket kit and all tools ready before beginning disassembly

Procedure

1. 1

   Remove ignition coils
   Disconnect the electrical connectors from all four ignition coils by pressing the release tab and pulling upward. Remove the single 10mm bolt securing each ignition coil. Carefully pull each coil straight up from the spark plug wells. Inspect coils for cracks or carbon tracking.
   Torque spec

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

   Remove spark plugs
   Use compressed air or a clean rag to remove any debris from around the spark plug wells. Using a 16mm spark plug socket, carefully remove all four spark plugs. Inspect plugs for condition and replace if worn or fouled. Keep plugs organized by cylinder if reusing.
   ⚠Clean spark plug wells thoroughly before removal to prevent debris from entering cylinders.
   Torque spec

   Spark Plugs - Aluminum Head20 Nm (15 lb-ft)
3. 3

   Disconnect PCV hoses and electrical connections
   Disconnect the PCV hose from the valve cover by squeezing the quick-disconnect fitting and pulling away. Disconnect any electrical connectors attached to or crossing the valve cover area, including the variable valve timing (VVT) sensor connector if equipped. Label connections if necessary for reassembly.
4. 4

   Remove wiring harness brackets
   Remove the wiring harness brackets and clips attached to the valve cover using a 10mm socket. There are typically 2-3 brackets that must be removed. Carefully move wiring harnesses aside to provide clear access to valve cover bolts.
5. 5

   Remove valve cover bolts
   Remove all valve cover bolts in reverse of the tightening sequence (working from outside to center). There are typically 14-16 bolts around the perimeter of the valve cover. Use a 10mm socket and keep bolts organized as some may be different lengths. Note the location of any bolts with wire harness brackets attached.
   Torque spec

   Cover Bolts16 Nm (12 lb-ft)
6. 6

   Remove valve cover
   Carefully lift the valve cover straight up from the cylinder head. If stuck, gently tap the cover with a rubber mallet or use a plastic pry tool at designated pry points. Do not pry between sealing surfaces. Remove the old gasket and spark plug tube seals from the valve cover or cylinder head.
   ⚠Never use metal tools to pry between valve cover and cylinder head. This will damage sealing surfaces.
7. 7

   Clean all mating surfaces
   Using a plastic gasket scraper, carefully remove all old gasket material from both the valve cover and cylinder head sealing surfaces. Clean surfaces thoroughly with brake cleaner and lint-free rags. Inspect for any scratches, gouges, or warping. The surfaces must be completely clean and dry before gasket installation.
   ⚠Ensure no gasket material or debris falls into open cylinder head. Cover openings with clean rags if needed.
   Torque spec

   Gasket Surface Bolts20 Nm (15 lb-ft)
8. 8

   Install new spark plug tube seals
   Press new spark plug tube seals into the valve cover by hand until fully seated. The seals should sit flush with the bottom of the valve cover. Apply a small amount of engine oil to the outer diameter of each seal to aid installation and sealing.
   ℹ️Spark plug tube seals are press-fit only. Do not use excessive force.
   Torque spec

   Spark Plug Tube Seals0 Nm (0 lb-ft)
9. 9

   Install new valve cover gasket
   Install the new valve cover gasket into the groove on the valve cover. Ensure the gasket is fully seated all the way around with no twists or gaps. Apply a small dab of silicone FIPG sealant at the front corners where the timing chain cover meets the cylinder head (approximately 3mm bead). Allow sealant to become tacky per manufacturer instructions (typically 5-10 minutes).
10. 10

    Install valve cover
    Carefully position the valve cover onto the cylinder head, aligning all bolt holes and ensuring spark plug tube seals align with cylinder head recesses. Do not slide the cover once in position. Install all bolts finger-tight first, ensuring any brackets or clips are reinstalled in their original positions.
11. 11

    Torque valve cover bolts in sequence
    Tighten valve cover bolts in the proper sequence using a torque wrench: start from the center bolts and work outward in a crisscross pattern. Torque all bolts to 10.0 Nm (7.0 lb-ft). Make two complete passes through the sequence to ensure even torque distribution and proper gasket compression.
    ⚠Over-tightening valve cover bolts can warp the cover and cause leaks. Use a calibrated torque wrench.
    Torque spec

    Cover Bolts16 Nm (12 lb-ft)
12. 12

    Reinstall wiring harness brackets and connectors
    Reinstall all wiring harness brackets and clips to the valve cover. Reconnect all electrical connectors including the VVT sensor. Reconnect the PCV hose ensuring the quick-disconnect fitting clicks into place securely.
13. 13

    Install spark plugs
    Apply a small amount of anti-seize compound to the threads of each spark plug (avoid getting anti-seize on the electrodes). Install spark plugs finger-tight, then torque to 20.0 Nm (15.0 lb-ft) using a torque wrench and spark plug socket. Do not over-tighten.
    ⚠Over-torquing spark plugs in aluminum heads can strip threads requiring costly repairs.
    Torque spec

    Spark Plugs - Aluminum Head20 Nm (15 lb-ft)
14. 14

    Reinstall ignition coils
    Apply a thin coat of dielectric grease to the inside of each ignition coil boot. Press each coil firmly down into its spark plug well until fully seated. Install the 10mm retaining bolt for each coil and torque to 8.0 Nm (6.0 lb-ft). Reconnect all ignition coil electrical connectors until they click.
    Torque spec

    Ignition Coil Bolts8 Nm (6 lb-ft)
15. 15

    Final checks and testing
    Reinstall the engine cover. Reconnect the negative battery terminal. Start the engine and allow it to idle for several minutes while checking for oil leaks around the valve cover gasket. Check for proper engine operation and any unusual noises. Shut off engine and recheck for leaks after engine reaches operating temperature.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify PCV hose is securely connected with no vacuum leaks
3. Double-check that all wiring harness brackets are reinstalled
4. Confirm engine cover is properly seated on all mounting points

Verification

• Start engine and inspect valve cover perimeter for oil leaks while engine is running
• Allow engine to reach full operating temperature and recheck for leaks
• Check for proper engine idle and no misfires or check engine light
• Verify no vacuum leaks by listening for hissing sounds around PCV connections
• After first drive cycle, recheck valve cover area for any seepage or wetness

More procedures for this vehicle