Lincoln Nautilus: Engine System - General Information / Valve Guide Inner Diameter. General Procedures
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
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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.
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Use a ball gauge to determine the inside diameter of
the valve guides in 2 directions at the top, middle and bottom of the
valve guide.
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Measure the ball gauge with a micrometer.
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If the valve guide is not within specifications, install a new cylinder head assembly.
Inspection
NOTE:
Dropped spark plugs should always be discarded.
Unfired
An unfired spark plug should appear very clean
with a pure nickel finish to the threads and ground strap...
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...
Other information:
Removal
Remove the D-pillar trim panel.
Refer to: D-Pillar Trim Panel (501-05 Interior Trim and Ornamentation, Removal and Installation).
NOTICE:
Take extra care not to crease the headliner.
Release the retainers and position aside the headliner...
Closing the Liftgate From Inside Your Vehicle
WARNING: Make sure all persons
are clear of the power liftgate area before
using the power liftgate control.
With the transmission in park
(P),
press the button on the instrument
panel.
Note: Make sure that you close the liftgate
before operating or moving your vehicle,
especially in an enclosure, like a garage or
a parking structure...