ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Ratio | 9.0:1 |
| Compression Pressure (1) | 171 psi (12.0 kg/cm 2 ) |
| (1) Minimum pressure is 128 psi (9.0 kg/cm 2 ). |
| (1) | Minimum pressure is 128 psi (9.0 kg/cm 2 ). |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. Trooper/SLX is equipped with hydraulic lash adjusters. No adjustment is required.
VALVE ARRANGEMENT
Intake valves are on side of head closest to intake manifold. Exhaust valves are on side of head closest to exhaust manifold.
IGNITION COIL
| Application (1) | Primary | Secondary |
|---|
| All Models | N/A | N/A |
| (1) Insulation resistance should not be more than 10 megohms. |
| (1) | Insulation resistance should not be more than 10 megohms. |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application (1) | Resistance |
|---|
| 0-15" wire | 3000-10,000 |
| 15-25" wire | 4000-15,000 |
| 25-35" wire | 6000-20,000 |
| (1) Wire longer then 35" should measure about 5000-10,000 ohms/foot. |
| (1) | Wire longer then 35" should measure about 5000-10,000 ohms/foot. |
HIGH TENSION WIRE RESISTANCE - Ohms @ 68°F (20°C)
SPARK PLUGS
| Application | No. |
|---|
| NGK | PK16PR11 |
| Champion | RC10PYP4 |
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|
| All Models | .041 (1.05) | 14 (19) |
SPARK PLUG SPECIFICATIONS
Firing Order. Scheme 1
| Application | Base Timing |
|---|
| All Models | 16 @ 750 |
IGNITION TIMING (Degrees BTDC @ RPM)
FUEL PUMP
| Application | Pressure psi (kg/cm 2 ) |
|---|
| All Models | 42-55 (2.9-3.9) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| All Models | 11.8-12.6 |
IDLE SPEED
| Application | RPM |
|---|
| All Models (1) | 750 |
| (1) Idle speed is controlled by PCM and is not adjustable. |
| (1) | Idle speed is controlled by PCM and is not adjustable. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR
Note. Refer to ADJUSTMENTS article for throttle position sensor/switch adjustment procedures.
