Ford Focus Service Manual: Piston Selection - Engine System
NOTE:
The cylinder bore must be within the specifications for taper and out-of-round before fitting a piston.
- Select a piston size based on the cylinder bore.
- NOTE:
For precision fit, new pistons are divided into 3 categories within each size range based on their relative position within the range. A paint spot or specific size grade on a new piston indicates the position within the size range.
Choose the piston with the correct paint color or specific size grade.
- Refer to the appropriate section in Group 303 for the procedure.
Piston Inspection - Engine System
Special Tool(s)
Scraper, Piston Ring Groove
303-D033 (D81L-6002-D) or equivalent
NOTICE: Do not use a caustic cleaning solution or a wire brush to clean the
pistons ...
Powertrain/Drivetrain Mount Neutralizing
NOTE: Refer to the appropriate section and procedure for special instructions
on loosening and tightening mount fasteners.
With the vehicle in NEUTRAL, position it on a hoist. For additional in ...
More about Ford Focus:
Ford Focus Valve Seat Width
NOTE: Refer to the appropriate Section 303-01 for the specification.
Measure the valve seat width. If necessary, grind the valve seat to specification.
Measure the intake valve seat width.
Measure the exhaust valve seat width.
Recheck the valve spring installed length ...
