ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature, specified cranking speed, all spark plugs removed and throttle wide open.
VALVE CLEARANCE
Note. All engines, except KA24DE, QG18DE and VQ30DE, are equipped with hydraulic lifters. Adjustments are not required.
| Application | In. (mm) | |
|---|---|---|
| Altima (2.4L) | ||
| Intake | .012-.015 (.30-.38) | |
| Exhaust | .015-.019 (.38-.48) | |
| Frontier (2.4L) & Xterra (2.4L) | ||
| Intake | .012-.015 (.30-.38) | |
| Exhaust | .013-.016 (.33-.41) | |
| I30 & Maxima (3.0L) | ||
| Intake | (2) .010-.013 (.25-.33) | |
| Exhaust | (2) .011-.015 (.28-.38) | |
| Sentra (1.8L) | ||
| Intake | .013-.016 (.33-.41) | |
| Exhaust | .015-.018 (.38-.46) | |
| (1) Unless otherwise specified, measure valve clearance with engine hot. (2) Measure valve clearance with engine cold. | ||
| (1) | Unless otherwise specified, measure valve clearance with engine hot. |
| (2) | Measure valve clearance with engine cold. |
VALVE CLEARANCE SPECIFICATIONS
IGNITION COIL RESISTANCE (SENTRA)
| Application | Primary | Secondary |
|---|---|---|
| 1.8L | (1) | (1) |
| 2.0L | .8 | 16,000 |
| (1) Information is not available from manufacturer. | ||
| (1) | Information is not available from manufacturer. |
IGNITION COIL RESISTANCE (SENTRA) - OHMS @ 77°F (25°C)
IGNITION COIL RESISTANCE (EXCEPT SENTRA)
| Application | Primary | Secondary |
|---|---|---|
| I30 & Maxima | (1) | (1) |
| Except I30 & Maxima | 1.0 | 10,000 |
| (1) Information is not available from manufacturer. | ||
| (1) | Information is not available from manufacturer. |
IGNITION COIL RESISTANCE (EXCEPT SENTRA) - OHMS @ 68°F (20°C)
HIGH TENSION WIRE RESISTANCE
| Application | Ohms @ 77°F (25°C) | ||
|---|---|---|---|
| Plug Wires | |||
| Frontier V6, Pathfinder, QX4 & Xterra V6 | |||
| No. 1 Spark Plug | 6500 | ||
| No. 2 Spark Plug | 10,000 | ||
| No. 3 & No. 5 Spark Plugs | 8500 | ||
| No. 4 Spark Plug | 12,500 | ||
| No. 6 Spark Plug | 11,000 | ||
| Except Frontier V6, Pathfinder, QX4 & Xterra V6 | 4150-5610 Per Ft. | ||
| (1) Not applicable to Distributorless Ignition Systems (DIS). | |||
| (1) | Not applicable to Distributorless Ignition Systems (DIS). |
HIGH TENSION WIRE RESISTANCE (1)
SPARK PLUG TYPE
| Application | NGK | |||
|---|---|---|---|---|
| Altima 2.4L | ||||
| Standard | PFR5G-11 | |||
| Optional | PFR6G-11 Or PFR7G-11 | |||
| Frontier & Xterra | ||||
| 2.4L | ||||
| Single Platinum Tip | ||||
| Standard | FR5AP-10 | |||
| Cold | FR6AP-10 Or FR7AP-10 | |||
| Double Platinum Tip | ||||
| Standard | PFR5G-11 | |||
| Cold | PFR6G-11 | |||
| Hot | PFR4G-11 | |||
| 3.3L | ||||
| Standard | FR5AP-10 | |||
| Cold | FR6AP-10 | |||
| Hot | FR4AP-10 | |||
| I30, Maxima & Quest | ||||
| Standard | PFR5G-11 | |||
| Cold | PFR6G-11 | |||
| Hot | PFR4G-11 | |||
| Pathfinder & QX4 | ||||
| Standard | FR5AP-10 | |||
| Cold | FR6AP-10 | |||
| Hot | FR4AP-10 | |||
| Sentra | ||||
| 1.8L | ||||
| Standard | PLFR5A-11 | |||
| Cold | PLFR6A-11 | |||
| Hot | PLFR4A-11 | |||
| 2.0L | ||||
| Conventional Type | ||||
| Standard | BKR6E | |||
| Cold | BKR7E | |||
| Hot | BKR5E | |||
| Platinum Type | ||||
| Standard | PFR5G-11 | |||
| Cold | PFR6G-11 Or PFR7G-11 | |||
SPARK PLUG TYPE
FIRING ORDER & DISTRIBUTOR ROTATION
Note. Use appropriate illustration for firing order and distributor rotation. (Scheme 1)- (Scheme 7).
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
IGNITION TIMING
Note. For ignition timing adjustment procedures, see ON-VEHICLE ADJUSTMENTS article.
| Application | Degrees BTDC | |
|---|---|---|
| Altima, Frontier (4-Cyl.) & Xterra (4-Cyl.) | 18-22 | |
| Sentra | ||
| 1.8L (Except CA) | 7-11 | |
| 1.8L CA | 7-11 | |
| 2.0L | 13-17 | |
| V6 Models | 13-17 | |
| (1) With transmission/transaxle in Neutral. | ||
| (1) | With transmission/transaxle in Neutral. |
IGNITION TIMING SPECIFICATIONS (1)
FUEL PUMP
| Application | At Idle W/O Vacuum - psi (kg/cm 2 ) | At Idle W/Vacuum - psi (kg/cm 2 ) |
|---|---|---|
| All Models (Except Sentra 1.8L CA) | 43 (3.02) | 34 (2.39) |
| Sentra 1.8L CA | 51 (3.57) |
REGULATED FUEL PRESSURE
| Application | Resistance @ 77°F (25°C) |
|---|---|
| All Models | .20-5.0 Ohms |
FUEL PUMP RESISTANCE
FUEL INJECTOR RESISTANCE
On Sentra, fuel injector resistance should be 13.5-17.5 ohms at 68°F (20°C). On all other models, fuel injector resistance should be 10-14 ohms at 77°F (25°C).
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. For idle speed adjustment procedures, see appropriate ON-VEHICLE ADJUSTMENTS article.
| Application | Base Idle RPM (1) | (1) Target Idle RPM | ||
|---|---|---|---|---|
| Altima | 600-700 | 650-750 | ||
| Frontier & Xterra | ||||
| 4-Cylinder | 700-800 | 750-850 | ||
| V6 | 650-750 | 700-800 | ||
| I30 & Maxima | ||||
| A/T | 650-750 | 650-750 | ||
| M/T | 575-675 | 575-675 | ||
| Pathfinder & QX4 | 650-750 | 700-800 | ||
| Quest | 650-750 | 700-800 | ||
| Sentra | ||||
| 1.8L | ||||
| A/T (Except CA) | 800-900 | 800-900 | ||
| M/T (Except CA) | 625-725 | 600-700 | ||
| CA | 750-850 | |||
| 2.0L | 750-850 | 750-850 | ||
| (1) With transmission/transaxle in Neutral. | ||||
| (1) | With transmission/transaxle in Neutral. |
IDLE SPEED
THROTTLE POSITION SENSOR
For adjustment specifications, see appropriate adjustment procedures in appropriate ON-VEHICLE ADJUSTMENTS article.
THROTTLE POSITION SWITCH
For adjustment specifications, see appropriate adjustment procedures in appropriate ON-VEHICLE ADJUSTMENTS article.