Valve Clearance Adjustment

For information on Ford Color Coded Illustrations refer to OEM Color Coding .

Materials 

Check 

1. Remove the valve cover. Refer to: Valve Cover .
2. NOTE: Only rotate the crankshaft clockwise.

   Rotate the crankshaft until the cam pair of the cylinder to be adjusted are pointing upwards. Using a suitable feeler gauge, measure the valve clearance.

3. Make a note of each cylinder number with the corresponding valve clearance.
4. Compare the measured valve clearance(s) with the specifications. Refer to: Specifications .

Courtesy of FORD MOTOR COMPANY

Adjustment 

1. NOTE: Only carry out the following steps when the valve clearance(s) require adjustment.
2. Remove the timing chain. Refer to: Timing Chain .
3. NOTE: Note the position of each component before removal.

   Remove the bolts, camshaft bearing caps and the camshafts.

   Courtesy of FORD MOTOR COMPANY

4. • Remove the valve tappet and read the thickness from the underside.
   • The number on the valve tappet indicates the thickness of the bottom of the tappet. However, the number only indicates the digits after the decimal point (example:650 = 3, 650).

5. • Calculate the required thickness of the valve tappet with the following formula:

     X = S + M - V 

   • Required thickness of tappet =

     X 

   • Thickness of currently fitted tappet =

     S 

   • Measurement of existing valve clearance (actual value) =

     M 

   • Desired valve clearance =

     V 

6. Install the correct valve tappet.
7. NOTE: Make sure that the camshafts and camshaft bearing caps are installed in their original locations.

   Coat the camshaft bearing caps with oil.

   Material

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

8. Install the camshafts approximately at valve overlap position cylinder Number 4.

   Torque:

   Stage 1: 62 lb.in (7 Nm)

   Stage 2: 142 lb.in (16 Nm)

   Courtesy of FORD MOTOR COMPANY

9. Install the timing chain. Refer to: Timing Chain .