| LOW OR NO OIL PRESSURE ON 7.0 & 7.5L ENGINES |
Low or No Oil Pressure On
1990-92 Ford 7.0 & 7.5L VIN J & G Engines
The AERA Technical Committee offers the following information regarding low or no oil pressure on 1990-92 Ford 7. 0 & 7.5L VIN J & G engines. Low or no oil pressure has been reported as the result of cracking or breakage of the oil pump or oil pump pickup screen at the flange attachment joint to the tube.
This joint has been brazed and may suffer fatigue after prolonged engine operation and is more prevalent with engines that are run constantly between 3500-4000 rpm. This cracking or joint breakage may be caused by the back and forth rotation of the pump body around the pump shaft axis. The rotation occurs when the oil tries to compress between the inlet and outlet ports within the G rotor set as the mating parts rotate, while driven by the pump drive shaft.
Replacement of the existing oil pump assembly is recommended during rebuild procedures, as microscopic cracks may not be evident during component inspection. There are three different screen and pickup tube assemblies and only one oil pump.
Part Number Component Application
E4HZ-6622-A Pickup Tube, Screen & Cover Assembly 7.0L Only
E4UZ-6622-A Pickup Tube, Screen & Cover Assembly Econoline
E4TZ-6622-A Pickup Tube, Screen & Cover Assembly F Series
F2TZ-6600-A Oil Pump Assembly All Vehicles
The AERA Technical Committee |
| ENGINE OIL RECOMMENDATIONS FOR FORD VEHICLES |
Engine Oil Recommendations For
Ford Vehicle Applications & Engines
The AERA Technical Committee offers the following information supplied by Ford Motor Company on recommended engine oil for Ford engines. Previously AERA published Technical Bulletin TB 1738, the information in this bulletin is an update to that bulletin. This latest information should be highly considered as quality improvements have been made to most engine oils. The current engine oil used by Ford during the vehicle manufacturing process is SAE 5W-20 Motorcraft oil. This oil may also be used for older vehicles described in chart 1 below.
The engine oil recommended for use in 2001 vehicles is SAE 5W-20 motor oil. This oil has an improved formulation to improve fuel economy. This oil can also be used to service some previous model year vehicles.
Use SAE 5W-20 engine oil at recommended oil change intervals for 2001 vehicles, with the exception of the following vehicles listed in the Exception 2001 Vehicles chart.
All 2001 vehicles other than those listed in the Exception 2001 Vehicles chart are being filled with SAE 5W-20 motor oil at the factory and should also be serviced with SAE 5W-20 oil.
Chart 1
1995-2000 2.5L Contour/Mystique
1999-2001 2.5L Cougar
1996-2001 3.0L 4V Taurus/Sable
1999-2001 3.0L (Vulcan) Ranger (Flexible Fuel & Gas), Windstar, Taurus/Sable (Flexible Fuel & Gas)
1996-1997 3.8L Thunderbird/Cougar
1996-2001 3.8L Mustang and 3.8L SPI Windstar
1997-2001 4.2L (SPI) F-150 (under 8500 GVW only), Econoline
1996-2001 4.6L 2V Mustang
1992-2001 4.6L Crown Victoria/Grand Marquis
1991-2001 4.6L Town Car 1994-1997 4.6L 2V Thunderbird/Cougar
1996-2001 4.6L 4V Mustang Cobra
1995-2001 4.6L Continental
1993-1998 4.6L 4V Mark VIII
1998-2001 5.4L 2V/4V Navigator 1997-2001 4.6L 2V Triton F-150/250 (under 8500 (GVW only), Econoline, Expedition
1997-2001 5.4L 2V F-150/250 (under 8500 GVW only) Expedition,E- 150/250/350, E-350 Chassis/RV/Cutaway
1997-2001 6.8L E-250/350, E-350 Chassis/RV/Cutaway
1999-2001 6.8L Super Duty F-Series 250 HD/350/450/550 Motorhome
2001 2.0L Zetec/2.0L SPI Focus
2001 2.0L Zetec/3.0L Escape
2001 2.0L SPI Escort
2000-2001 5.4L/6.8L Excursion
2000-2001 3.0L Lincoln LS
2001 2.0L Zetec Escort ZX2
NOTE: The following EXCEPTION 2001 VEHICLES should be serviced with SAE 5W-30 motor oil.
Chart 2
2001 2.5L Ranger
2001 3.3L Villager
2001 3.9L Lincoln LS
2001 4.0L Ranger, Explorer/Mountaineer, Explorer Sport and Explorer Sport Trac
2001 5.0L Explorer/Mountaineer
NOTE: If a vehicle is not listed in this application, SAE 5W-30 oil is recommended.
The AERA Technical Committee |
| ENGINE UPDATES |
Engine Updates For
1999 Ford 7.3L VIN F Turbo Diesel Engines
The AERA Technical Committee offers the following information regarding engine updates on 1999 Ford 7.3L VIN F turbo diesel engines. The following modifications were made to these engines during the middle of the production year 1999 and are currently being implemented by Ford.
Items that were updated include the fuel system, oiling system, turbocharger and the charge air cooler. Listed below are the sections and description of the changes.
Fuel System
1.Tungsten carbide-coated plunger and barrel. This will reduce the amount of injector damage by low lubricity fuel and water.
2. New fuel pressure regulator. Fuel pressure on all Powerstroke engines built since 1/18/1998 or engine serial number 551496. The fuel pressure should be 51 +/- 4.5 psi at idle.
3. Dual element fuel filter was introduced in 1999 to help filter the fuel that is returned to the fuel tank. Fuel filter Part # F81Z-9N184-AA.
NOTE: The new injectors and/or pump cannot be used in pre 1999.5 year engines and the pre 1999.5 model year pump and injector cannot be utilized in 1999.5 model year engines.
High Pressure Oil System
1. New high-pressure oil gallery plug for service that places the sealing ?O" rings deeper into the gallery. The new plug can be identified with a circular groove cut into the face of the plug as shown in Figure 1. The new plug went into production prior to 1999.5 model year with engine serial number 751869.
2. A new high-pressure oil pump that has a higher flow rate (7.2cc versus 6.8cc) compared to 1999 mid year and older.
Turbocharger
1 New higher efficient turbocharger. Turbo outlet diameter and compressor size increased to improve airflow. A taller pedestal provides additional clearance.
2. New exhaust inlet adapter allows access to the fuel pressure test port at rear of head.
3. New exhaust up-pipes with inlet adapter.
4. Econoline models use the new larger, taller turbo without the wastegate or charge air-cooling provisions.
Charge Air Cooler
1. New Charge Air Cooler (CAC) crossover is incorporate with the new turbo.
2. A Powertrain Control Module (PCM) controlled intake air heater is installed in the air inlet (after the CAC) to the engine side of the CAC crossover. The Econoline model heater is in the Y-pipe downstream of the turbo. The new heater is used to heat the air before it enters the combustion chamber in the engine during cold startup to reduce smoke. Electrical current is supplied to the intake heater by the PCM controlled relay.
3. Both E and F Series models use a new intake cover with a 3 (76mm) inlets into the heads for better flow to the combustion chamber as shown in Figure 2.
The AERA Technical Committee |
| LOW OR NOW OIL PRESSURE |
Low Or No Oil Pressure On
1990-92 Ford 7.0 & 7.5L Truck Engines
AERA members have reported low or no oil pressure on 1990-92 Ford 7.0 & 7.5L engines. This condition may be caused by air drawn into the suction side of the oil pump. A cracked pick-up tube is usually the cause. We recommend, in particular to inspect the brazed mounted flange joint.
This problem is usually found with engines that normally operate at higher rpm (3,500-4,000). Cracks may be caused from back and forth rotation of the pump body around the pump shaft axis. This rotation occurs when oil tries to compress between inlet and outlet ports as the oil pump components rotate.
Part Number Part Description Usage
E4HZ-6222-A Pick-Up Tube, 7.0L Engines only
Screen & Cover Assembly
E4UZ-6222-A Pick-Up Tube Econoline Vans, 7.5L
Screen & Cover Assembly
E4TZ-6222-A Pick-Up Tube, F-Series, 7.5L
Screen & Cover Assembly
F2TZ-6600-A Oil Pump Assembly All Engines
Replacing the affected components with new parts and repairing any resulting engine damage should bring oil pressure back to normal readings of 40-65 psi @ 2,000 rpm.
The AERA Technical Committee |
| OVERSIZE HOUSING BORES |
Oversize Main Bearing Housings On Some
Ford 2800 CC V6 Engines
Oversize main bearing housings have been found in some Ford 2800 cc V6 engines. the subject engines had main bearing saddles in the block with .015 oversize housings.
Ford Motor Co. supplies .015 oversize OD bearings for this engine with Standard, .010, .020 and .030 undersize ID.
The AERA Technical Committee |
| BEARING FAILURES |
Bearing Failures On
Ford 5.0 & 5.7L (302 & 351W CID) Engines
AERA members have experienced premature crankshaft bearing failures on 5.0 & 5.7L Ford engines.
Investigating these failures disclosed that all of the machined components were on size and the proper tolerances had been achieved. Closer inspection of other engine components revealed a crack in the exhaust crossover passage on the bottom side of the intake manifold.
Exhaust gases entering the crankcase through the crack not only contaminate the engine oil, but the oil itself is super heated to the point where it no longer lubricates resulting in contact between the bearing and the crankshaft journal.
Pressurizing the crankcase with exhaust gases should also overwhelm the PCV system leading to excessive oil consumption or oil in the air cleaner.
For additional information see AERA Technical Bulletins: TB 519 &
SB 146
The AERA Technical Committee |
| OIL IN THE COOLING SYSTEM |
Oil In The Cooling System On
Ford 3.8L (232 CID) Engines
AERA member machine shops have reported multiple instances of vehicles with cooling systems contaminated by engine oil.
One possible cause cited in many of the reported cases was that the engines were permitted to freeze up during cold ambient temperatures. Usually one or more of the core plugs was pushed out of the cylinder block, but the damage is not limited to that alone. The ice inside of the cylinder block water jacket expands and partially crushes an oil gallery.
When the core plugs are replaced and the cooling system is refilled, oil finds its way into the radiator. The cylinder block is no longer serviceable and must be replaced.
The AERA Technical Committee |
| INTAKE MANIFOLD COOLANT & VACUUM LEAKS |
Intake Manifold Coolant & Vacuum Leaks On
Ford 5.0L, 5.0L HO and 5.8L Engines
Intake manifold coolant and vacuum leaks have been found to be quite common on Ford 5.0L, 5.0L HO (High Output) and 5.8L engines. For this engine, following the proper intake manifold torque values and torque sequence is very critical.
Installation of the aluminum intake manifold should proceed as follows:
Clean all gasket surfaces of debris and oil residue.
Apply a 1/8 bead of silicone sealer in the 4 corners where the cylinder heads
meet the cylinder block (Figure 1).
Install the intake manifold side and end gaskets and apply a 1/16 bead of
silicone sealer in the 4 joints formed by the gaskets.
Mount the manifold and torque the bolts in sequence to 15-20 lbs.ft (Figure 2).
Torque the bolts in sequence to 23-25 lbs.ft.
After the engine has reached operating temperature, retorque the intake
manifold bolts to 23-25 lbs.ft.
The AERA Technical Committee |
| IGNITION FIRING ORDER ON HO ENGINES |
Ignition Firing Order On
Ford 5.0L HO (High Output) Engines
There seems to be much confusion about the firing order on Ford 5.0L HO (High Output) engines.
Contrary to the plain 5.0L engine, the HO (High Output) version uses the same firing order as the 5.8L engine. This is probably the case because early 5.0L HO engines used a 5.8L marine camshaft.
The firing order for the standard 5.0L is: 1-5-4-2-6-3-7-8. The firing order for the HO engine is: 1-3-7-2-6-5-4-8. The rotor inside the distributor rotates counterclockwise on both engines (see illustration).
Using the plain 5.0L firing order on the HO engine does work, however the engines will have low vacuum and very poor idle. At higher rpm it appears to smooth out, but is very low on horse power, not at all what the customer will expect from this potent power plant.
The AERA Technical Committee |
