Ford Mustang (1999-2004) Service Manual: 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 matched set and should not be interchanged.
Measure the piston pin bore diameter in two directions on each side. Verify the diameter is within specification.
- If out of specification, install new components as necessary.


Piston -Diameter
1. Measure the piston diameter 90 degrees from the piston pin at the point indicated.
- If out of specification, install new components as necessary.

Piston -to Cylinder Bore Clearance
1. Subtract the piston diameter from the cylinder bore diameter to find the piston-to-cylinder bore clearance.
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 o ...
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 ...
Other materials:
Safety precautions
WARNING: Do not overfill the fuel tank. The pressure in an
overfilled tank may cause leakage and lead to fuel spray and fire.
WARNING: The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler inlet, do not refuel until the
sound ...
Exhaust Manifold RH
Removal and Installation
1. Disconnect the battery ground cable. For additional information, refer to
Section.
2. Raise the vehicle. For additional information, refer to Section.
3. Remove the dual converter Y-pipe. For additional information, refer to
Sec ...
Audible warnings and indicators
Key In Ignition Warning Chime
Sounds when the key is left in the ignition in the off or accessory
position and the driver’s door is opened.
Keyless Warning Alert (If Equipped)
Sounds when the keyless vehicle is in RUN and the driver’s door is
opened.
Hea ...
