ENGINE COMPRESSION
Measure engine compression with engine at normal operating temperature, all spark plugs removed, and throttle wide open.
| Application | Specification |
|---|
| Compression Ratio | 9.7:1 |
| Compression Pressure | (1) * |
| (1) Lowest cylinder compression reading should not be less than 75 percent of highest cylinder compression reading. |
| (1) | Lowest cylinder compression reading should not be less than 75 percent of highest cylinder compression reading. |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic lash adjusters. No adjustments are required.
IGNITION COIL
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|
| Aspire | 0.5-0.7 | 20,000-31,000 |
CRANKSHAFT POSITION (CKP) SENSOR
Note. Crankshaft Position Sensor resistance cannot be measured. If found to be defective, distributor must be replaced as an assembly.
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|
| Coil Wire & Spark Plug Wires | 4000-7000 Per Foot |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Motorcraft |
|---|
| Aspire | AGS32C |
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|
| Aspire | 0.039-0.043 (1.0-1.1) | 15-22 (20-30) |
SPARK PLUG SPECIFICATIONS
Firing Order & Distributor Rotation. Scheme 1
Scheme 1: Firing Order & Distributor Rotation
IGNITION TIMING
| Application | A/T | M/T |
|---|
| Aspire | 9-11 @ 700-800 | 9-11 @ 650-750 |
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) Minimum volume in 10 seconds is 5.5 ounces (167 cc). |
| (1) | For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. |
| (2) | Minimum volume in 10 seconds is 5.5 ounces (167 cc). |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Aspire | 12-16 |
IDLE SPEED
| Application | Auto. Trans. | Man. Trans. |
|---|
| Aspire | 700-800 | 650-750 |
| (1) With jumper wire connected between Self-Test Input (STI) terminal and ground. |
| (1) | With jumper wire connected between Self-Test Input (STI) terminal and ground. |
IDLE SPEED SPECIFICATIONS (1)
THROTTLE POSITION (TP) SENSOR
| Throttle Position | Ohms |
|---|
| Wide Open Throttle | (1) Approximately 5,000 |
| Closed Throttle | (1) Less Than 1 |
| (1) With ohmmeter connected between Throttle Position Sensor terminals "A" and "B". If sensor is not within specifications, rotate sensor until specifications are met. If specifications cannot be met with adjustments, throttle body must be replaced. |
| (1) | With ohmmeter connected between Throttle Position Sensor terminals "A" and "B". If sensor is not within specifications, rotate sensor until specifications are met. If specifications cannot be met with adjustments, throttle body must be replaced. |
