Town Car V8-302 5.0L (1987)
Technical Service Bulletin # 9019
Date: 900104
Engine - Excessively High Oil Consumption
Article No. 90-1-9
OIL CONSUMPTION - 5.0L EFI ENGINES - SERVICE INFORMATION
FORD:
1987-88 THUNDERBIRD 1987-90 CROWN VICTORIA, MUSTANG
LINCOLN-MERCURY: 1987 CONTINENTAL 1987-88 COUGAR 1987-90 GRAND MARQUIS, MARK VII, TOWN CAR
LIGHT TRUCK:
1987-90 BRONCO, E-150, E-250, F-150, F-250
ISSUE:
Excessive oil consumption on 5.0L EFI engines may be caused by one or more of the following:
^
Oil leaks from gaskets
^
Poor sealing of the lower intake manifold
^
Intake and exhaust valve stem seals
^
Piston rings
ACTION:
Perform an inspection and oil consumption test as described in the following service procedure to determine if an excessive oil
consumption condition exists. If an excessive oil consumption condition is present, install new guide mounted valve stem seals for a more
positive fit and new piston rings with improved oil control. Refer to the following procedure for service installation details.
External Oil Leak Inspection Procedure
NOTE:
CHECK ALL GASKETS AND SEALS FOR OIL LEAKAGE.
1. Place the vehicle in a stall that has a hoist. Make sure the floor under the vehicle is clean and free of oil.
2. Inspect the engine for signs of oil leakage.
3. Clean any areas where oil looks like it may be leaking.
4. Run the engine for five (5) minutes at varying engine RPM.
NOTE:
DO NOT EXCEED 2500 RPM
5. Turn the engine off and re-inspect the engine for signs of oil leaks.
6. If an external oil leak is found, repair as required and repeat Steps 4 and 5. If no external oil leak is found, proceed to Step 7.
7. Torque the lower intake manifold using the following two (2) step procedure before proceeding to the "CUSTOMER OIL CONSUMPTION TEST."
a. Torque the lower intake manifold bolts in sequence to 15-20 lb.ft. (20-27 N-m).
