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:
Pinpoint Tests
CAUTION: Before removing and installing the GEM or its connectors,
disconnect the
battery. Failure to follow this caution will result in the GEM storing many
erroneous DTCs and it
may exhibit erratic operation after installation.
CAUTION: Be careful when pr ...
Temporary mobility kit
Note: The temporary mobility kit sealant compound in the canister is
to
be used for one tire only. See your Ford authorized dealer for additional
replacement sealant canisters.
The kit is located in the spare tire well in the trunk. The kit consists of
an ai ...
Valve Cover - LH
Removal and Installation
1. Position the ignition wires (12281) aside.
2. Disconnect the positive crankcase ventilation (PCV) valve (6758).
3. Remove the ignition coil and position aside.
1. Disconnect the electrical connector.
2. Disconnect the ac ...
