Lincoln Aviator: Engine System - General Information / General Procedures - Valve Guide Inner Diameter
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.
-
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.
-
Measure the ball gauge with a micrometer.
-
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:
From Inside Your Vehicle
With the transmission in park
(P),
press the button on the instrument
panel.
With the Remote Control
Press twice within three seconds
to open the luggage compartment.
From Outside Your Vehicle
Press the exterior release button...
Removal
NOTE:
When the battery is disconnected and connected, some
abnormal drive symptoms may occur while the vehicle relearns its
adaptive strategy. The vehicle may need to be driven to allow the PCM to relearn the adaptive strategy values.
NOTE:
Removal steps in this procedure may contain installation details...
Categories
The front outboard and rear safety restraints
in the vehicle are combination lap and
shoulder belts.
Insert the belt tongue into the proper
buckle (the buckle closest to the direction
the tongue is coming from) until you hear
a snap and feel it latch. Make sure that
you securely fasten the tongue in the
buckle.

To unfasten, press the release button
and remove the tongue from the buckle.
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