ENGINE COMPRESSION
Check engine compression at normal operating temperature at specified cranking speed. Release fuel pressure, and disconnect crankshaft position sensor harness connector. Remove all spark plugs, and hold throttle wide open.
| Application | Specification |
|---|
| Compression Ratio | 10.5:1 |
| Normal Compression Pressure | (1) 186 psi (13.1 kg/cm 2 ) |
| Minimum Compression Pressure | (1) 142 psi (10.0 kg/cm 2 ) |
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm 2 ) |
| (1) Measured at 300 RPM. |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All vehicles are equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL
| Application | Primary | Secondary |
|---|
| J30 | 0.9 | 8000 |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
DISTRIBUTOR SENSORS
| Application | (1) Fluctuating Voltage |
|---|
| All Models | Between 5 And Zero |
| (1) Rotate crankshaft position sensor slowly by hand. |
| (1) | Rotate crankshaft position sensor slowly by hand. |
CRANKSHAFT POSITION SENSOR
SPARK PLUGS
| Application | NGK No. |
|---|
| All Models | PFR5B-11 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| All Models | .039-.043 (1.00-1.10) | 15-21 (20-29) |
SPARK PLUG SPECIFICATIONS (Platinum)
FIRING ORDER & TIMING MARKS
Note. For firing order (Scheme 1) Adjustments to timing are made by rotating crankshaft position sensor after loosening mounting bolts.
Firing Order. Scheme 1
IGNITION TIMING
| Application | (1) Specification |
|---|
| J30 | 13-17 @ 670-770 |
| (1) See ADJUSTMENTS article. |
| (1) | See ADJUSTMENTS article. |
IGNITION TIMING (Degrees BTDC @ RPM)
FUEL PUMP
| Application | (1) psi (kg/cm 2 ) | (2) psi (kg/cm 2 ) |
|---|
| All Models | 36 (2.6) | 43 (3.0) |
| (1) With vacuum hose connected at fuel pressure regulator. (2) With vacuum hose disconnected at fuel pressure regulator. |
| (1) | With vacuum hose connected at fuel pressure regulator. |
| (2) | With vacuum hose disconnected at fuel pressure regulator. |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| All Models | 10-14 |
INJECTOR RESISTANCE SPECIFICATIONS
IDLE SPEED
| Application | RPM |
|---|
| A/C Off | 670-770 |
| A/C On | 750-850 |
| (1) See ADJUSTMENTS article. |
| (1) | See ADJUSTMENTS article. |
IDLE SPEED SPECIFICATIONS (1)
THROTTLE POSITION SENSOR
| Application | (1) Volts |
|---|
| J30 | 0.4-4.0 |
| (1) Voltage variation from closed throttle (idle) to wide open throttle. |
| (1) | Voltage variation from closed throttle (idle) to wide open throttle. |
THROTTLE POSITION SENSOR SPECIFICATIONS
| Application | (1) Ohms |
|---|
| Completely Released | 1700 |
| Partially Released | 1700-10,500 |
| Completely Depressed | 10,500 |
| (1) Approximate. |
THROTTLE POSITION SENSOR RESISTANCE
