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:

    Bulb
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    Switch - Key-In-Ignition Warning
    Removal 1. Remove the ignition switch lock cylinder. 1. Insert the ignition key and turn to the RUN position. 2. Insert a punch in the access hole of the steering column and press the release tab while pulling out the ignition switch lock cy ...

    Driveline System - General Information
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