Lincoln Nautilus: Engine System - General Information / Valve Stem Diameter. General Procedures
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
-
Measure the diameter of each intake and exhaust valve
stem at the points shown. Verify the diameter is within specification.
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
NOTE:
Valve guides tend to wear in an hourglass pattern.
The ball gauge can be inserted into the combustion chamber side of the
valve guide, if necessary...
Valve Train Analysis - Engine Off, Valve Cover Removed
NOTE:
The following component inspections are used to diagnose valve train concerns.
Check for damaged or severely worn parts and correct assembly...
Other information:
Press the button to cycle
through
the four gap settings.
The selected gap appears in the instrument
cluster display as shown by the bars in the
image.
Note: The gap setting is time dependent and
therefore, the distance adjusts with your
vehicle speed...
Removal
NOTE:
Removal steps in this procedure may contain installation details.
Release the rear seat cushion front locking tabs.
Release the rear seat cushion.
Raise the front of the cushion.
Push the cushion rearward until the cushion frame clears the attaching hooks...