Valve Clearance Adjustment - General Procedures

Special Service Tools / General Equipment

Materials

Check

1. 1
   Position the vehicle in NEUTRAL on the lift.
   Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
2. 2
   Remove the following components:

   1. Remove the valve cover.
      Refer to: Valve Cover (303-01A Engine – 1.5 L EcoBoost (118 kW/160 L PS) – I4, Removal and Installation).
   2. Remove the high-pressure fuel pump drive block.
      Refer to: High-Pressure Fuel Pump Drive Block (303-04A Fuel Charging and Controls – 1.5 L EcoBoost (118 kW/160 L PS) – I4, Removal and Installation).
   3. Remove the upper air cleaner outlet tube.
      Refer to: Air Cleaner Outlet Tube (303-12A Intake Air Distribution and Filtering – 1.5 L EcoBoost (118 kW/160 L PS) – I4, Removal and Installation).
   4. Remove the air cleaner.
      REFER TO: Air Cleaner Element (303-12A Intake Air Distribution and Filtering - 1.5 L EcoBoost (118 kW/160 L PS) - I4, Removal and Installation).
3. 3
   • Disconnect the electrical connector and the wiring harness retainer.

   • Disconnect the coupling and remove the PCV hose.

   • Disconnect and position the brake system vacuum hose aside.

   

4. 4
   • Disconnect the wiring harness retainers and disconnect the electrical connectors.

   • Disconnect the TC bypass hose.

   • Loosen the clamps, remove the bolt and the TC outlet pipe.
     Use common service equipment: hose clamp removal/installation tool.

   

5. 5
   Disconnect the electrical connector and the wiring harness retainer.

   

6. 6
   Remove the nuts and bracket, and position the EVAP canister purge valve aside.

   

7. 7
   • Remove the retainer and disconnect the vacuum hose.

   • Remove the studs and the vacuum pump. Discard the studs.

   

8. 8
   Remove and discard the vacuum pump gasket.

   

9. 9
   Remove the bolts and the support bracket.

   

10. 10
    • Remove the engine cover stud.

    • Remove the bolts and the stud.

    • Heat and break the adhesive bond, remove the brake vacuum pump cover.
      Use common equipment: heat gun.

    

11. 11
    Remove the bolts and the engine lift bracket.

    

12. 12

    NOTICE: Use only hand tools when removing or installing the spark plug, otherwise damage to the cylinder head or spark plug may occur.

    Remove the spark plugs.

    

13. 13
    Remove the retainers and the lower engine splash shield.

    

14. 14
    Measure and record the clearance of each valve.
    Use common equipment: feeler gauge

    

15. 15
    • Intake: 0.0112 in (0.285 mm)
    • Exhaust: 0.0167 in (0.425 mm)

    • Intake: 0.009–0.013 in (0.24–0.33 mm)
    • Exhaust: 0.015–0.019 in (0.38–0.47 mm)

    Replace the valve tappets as necessary.

Adjustment

1. 1
   Remove the camshafts.
   Refer to: Camshafts (303-01A Engine – 1.5 L EcoBoost (118 kW/160 L PS) – I4, Removal and Installation).
2. 2
   Select the tappets using this formula: tappet thickness = measured clearance + existing tappet thickness - nominal clearance.
3. 3
   Install the correct valve tappet.
4. 4
   Install a new O-ring.

   

5. 5
   Apply a 2.0 mm bead of flange sealant.
   Material: Flange Sealant / CU7Z-19B508-A (WSS-M2G348-A11)

   

6. 6
   Install the camshafts in approximately the valve overlap position for cylinder No. 4. Install the camshaft caps and tighten the bolts evenly, one-half turn at a time, until the camshaft bearing caps and the VCT bridge seat on the cylinder head.
   Material: Engine Oil – SAE 5W-20 – Synthetic Engine Oil / XO-5W20-Q1SP (WSS-M2C945-B1)
   Torque:
   Step 1: 1 - 16: 62 lb-in (7 N·m)
   Step 2: 17 - 20: 89 lb-in (10 N·m)
   Step 3: 1 - 16: 45°
   Step 4: 17 and 18: 70°
   Step 5: 19 and 20: 53°

   

7. 7
   • Rotate the crankshaft back 45° (counterclockwise).

   • Rotate the camshafts to measure the valve clearance,

   • Repeat the procedure as necessary until all valve clearances meet specifications.

   • Rotate the crankshaft clockwise until it stops against the special tool.
8. 8

   NOTICE: Use only hand tools when removing or installing the spark plug, otherwise damage to the cylinder head or spark plug may occur.

   Install the spark plugs.
   Torque: 115 lb-in (13 N·m)

   

9. 9
   Install the camshaft seals.
   Refer to: Camshaft Seal (303-01A Engine – 1.5 L EcoBoost (118 kW/160 L PS) – I4, Removal and Installation).
10. 10
    Install the engine shield and clips.