Ford Mustang (1999-2004) Service Manual: Valve - Seat Inspection

Valve and Seat Refacing Measurements

CAUTION: After grinding valves or valve seats, check valve clearance.

1. Check the valve head and seat.

  • Check valve angles.
  • Check margin width.
  • Refer to the appropriate section in Group 303 for the procedure.
  • Be sure margin width is within specification.

Valve -Seat Inspection

2. Inspect for abnormalities on the valve face and seat.

Valve -Seat Width

1. Measure the valve seat width. If necessary, grind the valve seat to specification.

  • Measure the intake valve seat width.
  • Measure the exhaust valve seat width.
  • Recheck the valve spring installed length after the seats have been ground, and shim the valve springs as necessary to achieve the correct installed spring length.
  • Refer to the appropriate section in Group 303 for the procedure.

Valve -Seat Inspection

Valve -Seat Runout

1. Use the Valve Seat Runout Gauge to check valve seat runout.

Valve -Seat Inspection

    Valve Spring Strength
    Special Tool(s) Pressure Gauge, Valve/Clutch Spring 303-006 (TOOL-6513-DD) or equivalent 1. Use a Valve/Clutch Spring Pressure Gauge to check the valve spring for correct strength ...

    Cylinder Head - Distortion
    Special Tool(s) Straight Edge 303-D039 (D83L-4201-A) or equivalent 1. Use a straight edge and a feeler gauge to inspect the cylinder head for flatness. If the cylinder head is disto ...

    Other materials:

    Vehicle storage
    If you plan on storing your vehicle for an extended period of time (30 days or more), read the following maintenance recommendations to make sure your vehicle stays in good operating condition. All motor vehicles and their components were engineered and teste ...

    Front Seat Backrest
    Removal and Installation All vehicles 1. Remove the seat. For additional information, refer to Seat-Front Power in this section. 2. Remove the front seat backrest latch. For additional information, refer to Latch-Front Seat Backrest in this section. ...

    Degas Bottle - 4.6L(2V) and 4.6L(4V)
    Removal and Installation 1. Drain the engine coolant from the degas bottle only. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section. 2. Disconnect the radiator vent hose. 3. Remove the degas bottle return hos ...