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:

    Camshaft Position (CMP) Sensor - 3.8L
    Removal 1. Disconnect the battery ground cable. For additional information, refer to Section. 2. Remove the camshaft position (CMP) sensor. Disconnect the connector. Remove the bolts and the sensor. Installation 1. To install, reverse t ...

    Pinpoint Test M: DTC B1891 - Air Bag Tone Warning Indicator Circuit Shorted to Battery or Ignition
    Normal Operation The restraints control module (RCM) monitors its connection to the generic electronic module (GEM) at pin 10. This connection is used to signal a chime if the air bag indicator is inoperative and another SRS fault exists. If the RC ...

    Output Shaft and Direct Clutch Cylinder
    Special Tool(s) Compressor, Clutch Spring 307-015 (T65L-77515-A) Protector, Piston Seal 307-080 (T80L-77234-A) Protector, Transmission Direct Clutch Outer Fluid Seal 307-422 Material Item Specification ...