Valve Clearance Adjustment

WARNING: This page is about a different variant/trim than selected.

Special Tool(s) / General Equipment

Feeler Gauge
Hot Air Gun
Hose Clamp Remover/Installer

Materials

Name	Specification
Motorcraft ® SAE 5W-20 Synthetic Blend Motor Oil XO-5W20-QSP	WSS-M2C945-A
Flange Sealant CU7Z-19B508-A	WSS-M2G348-A11

Check

With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
Remove the following items:
1. Remove the valve cover. Refer to: Valve Cover .
2. Remove the high-pressure fuel pump drive unit. Refer to: High-Pressure Fuel Pump Drive Unit .
3. Remove the upper air cleaner outlet pipe. Refer to: Air Cleaner Outlet Pipe .
4. Remove the air cleaner. Refer to: Air Cleaner .
- Disconnect the wiring harness electrical connector and retainer.
- Disconnect the coupling and remove the PCV hose.
- Disconnect and position the brake vacuum hose aside.
Courtesy of FORD MOTOR COMPANY
- Detach 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 the General Equipment: Hose Clamp Remover/Installer
Courtesy of FORD MOTOR COMPANY
Disconnect the wiring harness electrical connector and retainer.

Courtesy of FORD MOTOR COMPANY
Remove the nuts, bracket and position the EVAP canister purge valve aside.

Courtesy of FORD MOTOR COMPANY
- Detach the retainer and disconnect the vacuum hose.
- Remove the stud bolts and the vacuum pump. Discard the stud bolts.
Courtesy of FORD MOTOR COMPANY
Remove and discard the vacuum pump gasket.

Courtesy of FORD MOTOR COMPANY
Remove the bolts and the support bracket.

Courtesy of FORD MOTOR COMPANY
- Remove the engine cover mounting stud.
- Remove the bolts and the stud.
- Heat and break the adhesive bond and remove the brake vacuum pump cap.
  Use the General Equipment: Hot Air Gun
Courtesy of FORD MOTOR COMPANY
Remove the bolts and the engine lifting bracket.

Courtesy of FORD MOTOR COMPANY
NOTE: Only Use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

NOTE: Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.

Remove the spark plugs.

Courtesy of FORD MOTOR COMPANY
Remove the retainers and the engine undershield.

Courtesy of FORD MOTOR COMPANY
NOTE: Measure the valve clearance at base circle, with the lobe pointed away from the tappet, before removing the camshafts. Failure to measure all clearances prior to removing the camshafts will necessitate repeated removal and installation and wasted labor time.

Measure each valve's clearance and record its location.

Use the General Equipment: Feeler Gauge

Courtesy of FORD MOTOR COMPANY
NOTE:
The nominal clearance is:
- intake: 0.0112 in (0.285 mm)
- exhaust: 0.0167 in (0.425 mm)
NOTE:
The acceptable clearance is:
- 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 needed.

Adjustment

Remove the camshafts. Refer to: Camshafts .
NOTE: The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number has the thickness of 3.650 mm.

NOTE: Select the closest tappet size to the ideal tappet thickness available and mark the installation location.

Select tappets using this formula: tappet thickness = measured clearance + the existing tappet thickness - nominal clearance.
Install the correct valve tappet.
NOTE: Install a new O-ring seal.

Install the new O-ring seal.

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

Courtesy of FORD MOTOR COMPANY
NOTE: Make sure that the components are installed to the position noted before removal.

NOTE: Make sure that new bolts are installed.

NOTE: Apply clean engine oil to the bearing surfaces of the camshafts, camshaft bearing caps and the VCT bridge.

Install the camshafts approximately at valve overlap position cylinder No. 4. Install the camshaft caps and tighten the bolts evenly, half turn at a time, until the crankshaft bearing caps and the VCT bridge are seated against the cylinder head.

Material: Motorcraft ® SAE 5W-20 Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)

Torque:

Stage 1: 1 - 16: 62 lb.in (7 Nm)

Stage 2: 17 - 20: 89 lb.in (10 Nm)

Stage 3: 1 - 16: 45 °

Stage 4: 17 and 18: 70 °

Stage 5: 19 and 20: 53 °

Courtesy of FORD MOTOR COMPANY
- Turn the crankshaft back by 45 ° (counterclockwise).
- Turn the camshafts to measure the valve clearance,
- Repeat the procedure as necessary until all the valve clearances are within specifications.
- Turn the crankshaft clockwise until it stops against the special tool.
NOTE: Only Use hand tools when removing or installing the spark plugs, or damage can occur to the cylinder head or spark plug.

Install the spark plugs.

Torque: 115 lb.in (13 Nm)

Courtesy of FORD MOTOR COMPANY
Install the camshafts seals. Refer to: Camshaft Seal .
Install the engine undershield and the retainers.

Courtesy of FORD MOTOR COMPANY