ENGINE COMPRESSION
Warm engine to normal operating temperature. Check compression at cranking speed with throttle wide open and all spark plugs removed. Ensure crankcase is at correct level and oil is of 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 |
COMPRESSION RATIO SPECIFICATIONS
VALVE CLEARANCE
Note. On 1.8L, valve clearance is zero and adjustment is not possible.
IGNITION COIL
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|---|---|
| 1.8L | 0.8-1.6 | 6000-30,000 |
IGNITION COIL RESISTANCE
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|---|
| 1.8L | 4000-7000 Per Foot |
| (1) On distributorless systems, high tension wire resistance is 30,000 ohms total per wire. | |
| (1) | On distributorless systems, high tension wire resistance is 30,000 ohms total per wire. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Motorcraft No. |
|---|---|
| 1.8L | AGSP-32C |
SPARK PLUG TYPE
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|---|---|
| 1.8L | .043 (1.09) | 17 (23) |
SPARK PLUG SPECIFICATIONS
Firing Order (1.8L). Scheme 1
IGNITION TIMING
| Application | Degrees BTDC @ Idle |
|---|---|
| 1.8L | (1) 9-11 |
| (1) With STI terminal of DLC grounded. | |
| (1) | With STI terminal of DLC grounded. |
BASE IGNITION TIMING
FUEL PUMP
Note. For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article.
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. If idle mixture is incorrect, see TESTS W/CODES - EEC (1.8L) article in the ENGINE PERFORMANCE section.
| Model | RPM |
|---|---|
| 1.8L | (1) 700-800 |
| (1) With STI terminal of DLC grounded. | |
| (1) | With STI terminal of DLC grounded. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR
| Throttle Position | (1) Volts | (1) Ohms |
|---|---|---|
| Closed | 0.5 | 400 |
| 1/4 Open | 1.3 | 600 |
| 1/2 Open | 2.2 | 1600 |
| 3/4 Open | 2.9 | 2200 |
| Full Open | 3.7 | 3000 |
| (1) Values may vary by 15 percent. | ||
| (1) | Values may vary by 15 percent. |
TP SENSOR SPECIFICATIONS