Ford Mustang (1999-2004) Service Manual: Piston - Selection

NOTE: The cylinder bore must be within the specifications for taper and out-of-round before fitting a piston.

1. Select a piston size based on the cylinder bore.

Piston - Selection

2. NOTE: For precision fit, new pistons are divided into three categories within each size range based on their relative position within the range. A paint spot on the new pistons indicates the position within the size range.

Choose the piston with the correct paint color.

  • Refer to the appropriate section in Group for the procedure

Piston - Selection

    Piston - Pin to Bore Diameter
    1. WARNING: Cover the end of the pin bore with a hand or shop rag when removing the retainer ring, since it has a tendency to spring out. Wear eye protection. NOTE: Piston and piston pins are a matc ...

    Piston - Ring End Gap
    CAUTION: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore. CAUTION: Piston rings should not be transferred from one piston to another. NOTE: Cylin ...

    Other materials:

    Bearing Whine
    Bearing whine is a high-pitched sound similar to a whistle. It is usually caused by worn/damaged pinion bearings, which are operating at driveshaft speed. Bearing noise occurs at all driving speeds. This distinguishes it from gear whine which usually comes ...

    Inspection and Verification
    1. The keyless entry system is a generic electronic module (GEM). 2. Verify the customer concern by using the remote transmitters to operate the keyless entry system. 3. Visually inspect for the following obvious signs of mechanical and electrica ...

    Timing Drive Components
    Special Tool(s) Compressor, Valve Spring 303-567 (T97P-6565-AH) Holding Tool, Crankshaft 303-448 (T93P-6303-A) Aligner, Camshaft Position 303-557 (T96T-6256-B) ...