Lincoln Aviator: Engine System - General Information / General Procedures - Valve Stem Diameter
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...
Other information:
Cleaning
Remove the Turbocharger Boost Pressure (TCBP) sensor from the CAC.
Refer to: Turbocharger Boost Pressure (TCBP) and Charger Air Cooler Temperature (CACT) Sensor (303-14A Electronic Engine Controls - 3.0L EcoBoost/3.0L EcoBoost – Hybrid (BQ), Removal and Installation)...
Disconnect
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:
When disconnecting the battery to interrupt power to the
vehicle electrical system, disconnect the battery ground cable(s)...