ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature, all spark plugs removed (on dual plugs, remove exhaust side only), and throttle wide open. Ensure crankcase is full and oil is of correct viscosity. With compression gauge installed, use remote starter to crank engine.
Crank engine at least 5 revolutions, and record highest reading. Repeat procedure for all cylinders, using approximately same number of revolutions. Lowest compression reading should not be less than 75 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm 2 ).
| Application | Compression Ratio |
|---|
| 3.0L | 9.0:1 |
COMPRESSION RATIO SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic valve lifters; valve adjustment is not required. If incorrect valve clearance is suspected, collapse lifter before checking clearance.
| Application | In. (mm) |
|---|
| Except Villager | .088-.189 (2.23-4.77) |
| Villager | (1) |
| (1) Information is not available. |
| (1) | Information is not available. |
COLLAPSED VALVE LIFTER CLEARANCE
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| Except Villager | 7000 Per Foot |
| Villager | 9100 Per Foot |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Motorcraft No. |
|---|
| Aerostar & Ranger | AWSF-32P |
| Villager | AGSP-32C |
| Windstar | AWSF-32PP |
| Application | (1) Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| Except Villager | 0.042-0.046 (1.07-1.17) | 7-15 (9-20) |
| Villager | 0.031-0.035 (0.8-0.9) | 14-22 (19-30) |
| (1) If Vehicle Emissions Information decal contradicts spark plug gap specification in table, use information on decal. |
| (1) | If Vehicle Emissions Information decal contradicts spark plug gap specification in table, use information on decal. |
SPARK PLUG SPECIFICATIONS
FIRING ORDER & TIMING MARKS
Identifying Firing Order & Timing Mark ID (3.0L - Aerostar). Scheme 4
Scheme 4: Identifying Firing Order & Timing Mark ID (3.0L - Aerostar)
Identifying Firing Order & Timing Marks (3.0L - Aerostar & Ranger). Scheme 5
Scheme 5: Identifying Firing Order & Timing Marks (3.0L - Aerostar & Ranger)
Identifying Spark Plug Wire Routing (3.0L - Aerostar & Ranger). Scheme 6
Scheme 6: Identifying Spark Plug Wire Routing (3.0L - Aerostar & Ranger)
Identifying Firing Order & Distributor Rotation (3.0L - Villager). Scheme 7
Scheme 7: Identifying Firing Order & Distributor Rotation (3.0L - Villager)
Scheme 8
Scheme 8: Firing Order & Timing Mark (3.0L - Windstar)
Scheme 9
Scheme 9: Spark Plug Wire Routing (3.0L - Windstar)
IGNITION TIMING
| Application | Degrees BTDC |
|---|
| Except Villager | (1) 10 |
| Villager | (2) 15 |
| (1) With SPOUT in-line connector unplugged. (2) With IAC solenoid connector unplugged. |
| (1) | With SPOUT in-line connector unplugged. |
| (2) | With IAC solenoid connector unplugged. |
FUEL PUMP
Note. Fuel pump performance is a measurement of fuel pressure and volume availability, not regulated fuel pressure. For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article.
| Application | Specification |
|---|
| Pressure | (1) |
| Volume | (2) |
| (1) For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. (2) Volume is 1 pt. (.5L) in 30 seconds. |
| (1) | For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. |
| (2) | Volume is 1 pt. (.5L) in 30 seconds. |
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. If idle mixture is incorrect, see appropriate article in the ENGINE PERFORMANCE section
- «TESTS W/CODES - EEC-IV (3.0L)»(ref-23291) (for Aerostar)
- «TESTS W/CODES - EEC-V (3.0L)»(ref-23292) (for Ranger & Windstar)
- «TESTS W/CODES»(ref-23293) (for Villager)
| Application | RPM |
|---|
| Villager (1) | 650-750 |
| Except Villager | (1) |
| (1) Idle speed is computer controlled and is not adjustable. |
| (1) | Idle speed is computer controlled and is not adjustable. |
THROTTLE POSITION (TP) SENSOR
| Application | Idle | Wide Open Throttle |
|---|
| Except Villager | 0.20 | 4.84 |
| Villager | 0.40 | 4.10 |
| (1) Minimum idle and maximum wide open throttle specifications are given. |
| (1) | Minimum idle and maximum wide open throttle specifications are given. |
TP SENSOR VOLTAGE SPECIFICATIONS (1)
