Ford Mustang (1999-2004) Service Manual: Piston - Ring-to-Groove Clearance
1. Inspect the piston for ring land damage or accelerated wear.

2. Measure the piston ring-to-groove clearance.
- Refer to the appropriate section in Group for the procedure.
- If out of specification, install new components as necessary. Refer to the appropriate section in Group for the procedure.

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 ...
Piston - Pin Diameter
1. Measure the piston pin diameter in two directions at the points shown.
Verify the diameter is
within specification.
Refer to the appropriate section in Group for the procedure.
If out of s ...
Other materials:
Rear Drive Axle and Differential
The differential housing (4010) consists of a cast aluminum housing and
a cast aluminum
differential housing cover (4033). The differential housing cover uses
silicone sealant as a
gasket.
The hypoid-design gearset consists of a 8.8-inch ...
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, ...
Pinpoint Tests
CAUTION: Before removing and installing the generic electronic
module (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
in ...
