ENGINE COMPRESSION
Warm engine to normal operating temperature. Check compression at cranking speed with throttle wide open and all spark plugs removed. On engines with dual plug cylinders, remove exhaust side only. Ensure crankcase is at correct level and oil is correct viscosity. With compression gauge installed, use remote starter to crank engine.
Crank engine 5 revolutions (minimum) 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. Cylinder compression readings should not be less than 100 psi (7 kg/cm 2 ).
| Application | Compression Ratio |
|---|---|
| 1.8L | 9.0:1 |
| 1.9L | 9.0:1 |
| 2.0L | 9.0:1 |
| 2.3L HSC | 9.0:1 |
| 2.3L OHC | 9.5:1 |
COMPRESSION RATIO SPECIFICATIONS
VALVE CLEARANCE
Note. On 1.8L and 2.0L models, valve clearance is zero and adjustment is not possible. On all other models, hydraulic valve lifters are used and valve adjustment is not required. If incorrect valve clearance is suspected, lifter must be collapsed before clearance can be checked.
| Application | In. (mm) | |
|---|---|---|
| 1.9L | 0-.177 (0-4.50) | |
| 2.3L HSC | .070-.170 (1.80-4.34) | |
| 2.3L OHC | ||
| Allowable | .035-.055 (.89-1.40) | |
| Preferred | .040-.050 (1.01-1.27) | |
COLLAPSED VALVE LIFTER CLEARANCE
IGNITION COIL
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|---|---|
| 1.8L | 0.8-1.6 | 6000-30,000 |
| 1.9L | (1) | (1) |
| 2.0L | 0.6-1.1 | 1150-18,500 |
| 2.3L HSC | 0.8-1.6 | 8000-11,500 |
| 2.3L OHC | (1) | (1) |
| (1) Resistance value is not provided by manufacturer. For testing, see IGNITION SYSTEMS in I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section. | ||
| (1) | Resistance value is not provided by manufacturer. For testing, see IGNITION SYSTEMS in I - EEC-IV SYS/COMP TESTS article in the ENGINE PERFORMANCE Section. |
IGNITION COIL RESISTANCE (OHMS @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|---|
| 1.8L & 2.0L | 4000-7000 Per Foot |
| (1) Distributorless systems are 30,000 ohms total per wire. | |
| (1) | Distributorless systems are 30,000 ohms total per wire. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Motorcraft No. | |
|---|---|---|
| 1.8L | AGSP-32C | |
| 1.9L | AGSF-34C | |
| 2.0L | AGSP-32C | |
| 2.3L | ||
| HSC | AWSF-42C | |
| OHC | AWSF-32C | |
SPARK PLUG TYPE
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) | |
|---|---|---|---|
| 1.8L | .043 (1.09) | 17 (23) | |
| 1.9L | .054 (1.37) | 15 (20) | |
| 2.0L | .039-.043 (0.99-1.09) | 11-17 (15-23) | |
| 2.3L | |||
| HSC | .054 (1.37) | 10 (14) | |
| OHC | .044 (1.12) | 10 (14) | |
SPARK PLUG SPECIFICATIONS
Identifying Firing Order (1.8L). Scheme 1
Identifying Timing Marks (1.8L). Scheme 2
Identifying Firing Order & Timing Marks (1.9L). Scheme 3
Scheme 4
Identifying Firing Order (2.0L). Scheme 5
Identifying Firing Order & Timing Marks (2.3L HSC). Scheme 6
Identifying Firing Order & Timing Marks (2.3L OHC). Scheme 7
Scheme 8
IGNITION TIMING
| Application | Degrees BTDC @ RPM | |
|---|---|---|
| 1.8L | (1) 10 @ 750 | |
| 1.9L | (1) 10 @ 815 | |
| 2.0L | 11-13 @ 650-750 | |
| 2.3L | ||
| A/T | (2) 10 @ 625 | |
| M/T | (2) 10 @ 675 | |
| (1) With STI terminal grounded. (2) With SPOUT in-line connector disconnected. | ||
| (1) | With STI terminal grounded. |
| (2) | With SPOUT in-line connector disconnected. |
BASE IGNITION TIMING
FUEL PUMP
Note. For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article.
Note. Fuel pump performance is a measurement of fuel pressure and volume availability, not regulated fuel pressure.
| Application | Specification |
|---|---|
| Pressure | (1) |
| Volume | 1.5 Pts. (0.7L) In 30 Seconds |
| (1) For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. | |
| (1) | For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. |
FUEL PUMP PERFORMANCE
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. If idle mixture is incorrect, see appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
| Model | RPM |
|---|---|
| 1.8L | 700-800 |
| 1.9L | 730-830 |
| 2.0L | 700-800 |
| 2.3L | (1) 500-800 |
| (1) For M/T vehicles, idle speed is 450-750 RPM. | |
| (1) | For M/T vehicles, idle speed is 450-750 RPM. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR/SWITCH
Note. For 1.8L M/T throttle position (TP) switch procedures and specifications, see CIRCUIT TEST STG in G - EEC TESTS W/CODES article in the ENGINE PERFORMANCE Section.