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

Special Tool(s)

Scraper, Piston Ring Groove 303-D033 (D81L-6002-D) or equivalent

CAUTION: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.

1. Clean and inspect the (1) ring lands, (2) skirts, (3) pin bosses, and the (4) tops of the pistons. If wear marks, scores or glazing is found on the piston skirt, check for a bent or twisted connecting rod.

Piston Inspection

2. Use the Piston Ring Groove Scraper to clean the piston ring grooves.

  • Make sure the oil ring holes are clean.

Piston Inspection

    Crankshaft - Connecting Rod Journal Taper, Out of Round
    1. Measure the crankshaft connecting rod journal diameters in two directions perpendicular to one another at each end of the connecting rod journal. The difference in the measurements from one e ...

    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 ...

    Other materials:

    Sprockets
    1. WARNING: To avoid the possibility of personal injury or damage to the vehicle, do not operate the engine with the hood open until the fan blade has been examined for possible cracks and separation. NOTE: Specifications show the expected minimum or ma ...

    Removal
    1. Remove the air intake scoop bracket. For additonal information, refer to Section. 2. Remove the air cleaner outlet tube. For additional information, refer to Section. 3. Disconnect the accelerator cable, the speed control actuator cable and the return ...

    Subwoofer Speaker - Convertible
    Removal and Installation 1. Remove the rear quarter trim panel. For additional information, refer to Section . 2. Remove the subwoofer assembly. 1. Disconnect the electrical connectors. 2. Remove the screws. 3. Remove the subwoofer assemb ...