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.

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 - 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:
Manual transmission
Using the Clutch
Manual transmission vehicles have a starter interlock that prevents
starting the engine unless the clutch pedal is fully pressed.
To start the vehicle:
1. Make sure the parking brake is fully set.
2. Press the clutch pedal to the
floor, then ...
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 distorted, install a new cylinder head.
Cylinder Bore -Cleaning ...
Crankshaft Position (CKP) Sensor - 3.8L
Removal
1. Disconnect the battery ground cable. For additional information,
refer to Section.
2. Remove the crankshaft position (CKP) sensor.
Disconnect the connector.
Remove the bolts and the sensor.
Installation
1. To install, reverse ...
