Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Infiniti QX4FACTORY OEM SERVICE PROCEDURE
Service Intervals & Specifications
REPLACEMENT INTERVALS
| Component | Interval (Miles) | |||||
|---|---|---|---|---|---|---|
| Air Filter | 30,000 | |||||
| Coolant | ||||||
| Quest | 30,000 | |||||
| All Others | (1) 60,000 | |||||
| Fuel Filter | As Needed | |||||
| Oil & Filter | (2) 7500 | |||||
| Spark Plugs | ||||||
| Conventional | 30,000 | |||||
| Platinum | 60,000 | |||||
| Timing Belt | 60,000 | |||||
|
||||||
4-CYLINDER BELT ADJUSTMENT
| Application | (1) Deflection - In. (mm) | ||||
|---|---|---|---|---|---|
| Alternator | |||||
| Altima | .31 (8) | ||||
| Frontier | .43 (11) | ||||
| Sentra & 200SX | |||||
| 1.6L | .31 (8) | ||||
| 2.0L | .35 (9) | ||||
| 240SX | .31 (8) | ||||
| A/C Compressor | |||||
| Altima | .31 (8) | ||||
| Frontier | .43 (11) | ||||
| Sentra & 200SX | |||||
| 1.6L | .26 (6.5) | ||||
| 2.0L | .31 (8) | ||||
| 240SX | .33 (8.5) | ||||
| Power Steering Pump | |||||
| Altima | .28 (7) | ||||
| Frontier | .50 (12) | ||||
| Sentra & 200SX | .20 (5) | ||||
| 240SX | .33 (8.5) | ||||
|
|||||
V6 BELT ADJUSTMENT
| Application | (1) Deflection - In. (mm) | |||
|---|---|---|---|---|
| Alternator | ||||
| Maxima | .28 (7) | |||
| Pathfinder & QX4 | .28 (7) | |||
| Quest | .33 (8.5) | |||
| A/C Compressor | ||||
| Maxima | .18 (4.6) | |||
| Pathfinder & QX4 | .43 (11) | |||
| Quest | .28 (7) | |||
| Power Steering Pump | ||||
| Maxima | .31 (8) | |||
| Pathfinder & QX4 | .39 (10) | |||
| Quest | .47 (12) | |||
|
||||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.