Lincoln Corsair: Engine System - General Information / General Procedures - Valve Train Analysis
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.
Valve Train Analysis - Camshaft Lobe Lift
-
Remove the spark plugs.
For additional information, refer to: Spark
Plugs (303-07A Engine Ignition - 2.0L EcoBoost (177kW/240PS) – MI4/2.0L
EcoBoost (184kW/250PS) – MI4, Removal and Installation).
For additional information, refer to: Spark Plugs (303-07B Engine
Ignition - 2.3L EcoBoost (199kW/270PS), Removal and Installation).
For additional information, refer to: Spark Plugs (303-07C Engine
Ignition - 2.5L Duratec – Hybrid (121kW/164PS) (BG), Removal and
Installation).
-
Install the Dial Indicator Gauge with Holding Fixture so
the rounded tip of the dial indicator is on top of the camshaft lobe
and on the same plane as the valve tappet.
-
Rotate the crankshaft using a breaker bar and socket
attached to the crankshaft pulley retainer bolt. Rotate the crankshaft
until the base circle of the camshaft lobe is reached.
-
Zero the dial indicator. Continue to rotate the
crankshaft until the high-lift point of the camshaft lobe is in the
fully raised position (highest indicator reading).
-
To check the accuracy of the original dial indicator
reading, continue to rotate crankshaft until the base circle is reached.
The indicator reading should be zero. If zero reading is not obtained,
repeat Steps 2 through 5.
-
If the lift on any lobe is below specified service
limits, install a new camshaft and camshaft roller followers or valve
tappets.
-
Install the spark plugs.
For additional information, refer to:
Spark Plugs (303-07A Engine Ignition - 2.0L EcoBoost (177kW/240PS) –
MI4/2.0L EcoBoost (184kW/250PS) – MI4, Removal and Installation).
For additional information, refer to: Spark Plugs (303-07B Engine
Ignition - 2.3L EcoBoost (199kW/270PS), Removal and Installation).
For additional information, refer to: Spark Plugs (303-07C Engine
Ignition - 2.5L Duratec – Hybrid (121kW/164PS) (BG), Removal and
Installation).
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
NOTE:
This procedure is for the roof opening panel sliding glass only.
Open the roof opening panel glass slightly to gain access to the roof opening panel glass screws.
If closed, open the roof opening panel shield.
Remove the RH roof opening panel glass screws.
Remove the LH roo..
Special Tool(s) /
General Equipment
Strap Wrench
Materials
Name
Specification
Motorcraft® Silicone Brake Caliper Grease and Dielectric CompoundXG-3-A
ESA-M1C200-AESE-M1C171-A
Removal
Drain the cooling system.
Refer to: Engine Cooling System Draining, Vacuum Filling and Bleeding
(303-03B Engine Cooling - 2.3L EcoBoost (199kW/270PS), General
Procedures..