ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed (on dual plugs, remove exhaust side only) and throttle wide open.
| Application | Specification |
|---|
| Compression Ratio | 9.2:1 |
| Normal Compression Pressure | 178 psi (12.5 kg/cm 2 ) |
| Minimum Compression Pressure | 149 psi (10.5 kg/cm 2 ) |
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm 2 ) |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
| Application | Hot - In. (mm) |
|---|
| Intake | .012-.015 (.30-.38) |
| Exhaust | .013-.016 (.33-.41) |
VALVE CLEARANCE SPECIFICATIONS
IGNITION COIL
| Application | Primary | Secondary |
|---|
| Altima | 1.0 | 10,000 |
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|
| Plug Wires | 30,000 Maximum |
| Coil Wire | 7000 Maximum |
| (1) Not applicable to Distributorless Ignition Systems (DIS). |
| (1) | Not applicable to Distributorless Ignition Systems (DIS). |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | NGK |
|---|
| Altima | BKR5E-11 |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| Altima | .039-.043 (1.00-1.10) | 14-22 (20-29) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER & DISTRIBUTOR ROTATION
Note. For firing order and distributor rotation (Scheme 1)
Firing Order & Distributor Rotation ID (Altima). Scheme 1
Scheme 1: Firing Order & Distributor Rotation ID (Altima)
IGNITION TIMING
Note. For ignition timing adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.
| Application | Man. Trans. | (1) Auto. Trans. |
|---|
| Altima | 18-22 @ 700-800 | 18-22 @ 700-800 |
| (1) Automatic transmission/transaxle in Neutral. |
| (1) | Automatic transmission/transaxle in Neutral. |
IGNITION TIMING (Degrees BTDC @ RPM)
FUEL PUMP
| Application | At Idle W/O Vacuum psi (kg/cm 2 ) | At Idle W/ Vacuum psi (kg/cm 2 ) |
|---|
| Altima | 43 (3.0) | 34 (2.4) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| Altima | (1) 11 |
| (1) Value given is approximate. |
| (1) | Value given is approximate. |
INJECTOR RESISTANCE SPECIFICATIONS
IDLE SPEED & MIXTURE
Note. For idle speed and mixture adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.
| Application | Idle (1) RPM | Idle (2) RPM | Maximum CO (3) Level |
|---|
| Altima | (4) 650-750 | (4) 600-700 | 5.0% |
| (1) With throttle position sensor connected. (2) With throttle position sensor disconnected. (3) Measured in Self-Diagnostic Mode II. (4) Automatic transmission/transaxle in Neutral. |
| (1) | With throttle position sensor connected. |
| (2) | With throttle position sensor disconnected. |
| (3) | Measured in Self-Diagnostic Mode II. |
| (4) | Automatic transmission/transaxle in Neutral. |
THROTTLE POSITION SENSOR
For adjustment specifications, see appropriate adjustment procedures in ADJUSTMENTS article in the ENGINE PERFORMANCE section.
THROTTLE POSITION SWITCH
| Application | Terminals | (1) Ohms |
|---|
| Closed Throttle | 1 & 2 | Continuity |
| Open Throttle | 1 & 2 | No Continuity |
| (1) With ignition off. |
CLOSED THROTTLE POSITION SWITCH SPECIFICATIONS - A/T
| Application | Terminals | (1) Ohms |
|---|
| Closed Throttle | 2 & 3 | No Continuity |
| Open Throttle | 2 & 3 | Continuity |
| (1) With ignition off. |
WOT POSITION SWITCH SPECIFICATIONS - A/T
