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.
1990 Nissan-Datsun Pathfinder SE, 4D Utility, AutomaticFACTORY OEM SERVICE PROCEDURE
Compression Specifications - 4-Cylinder
COMPRESSION SPECIFICATIONS - 4-CYLINDER
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| Axxess | 8.6:1 | |
| Pathfinder & Pickup | 8.6:1 | |
| Pulsar NX | 9.4:1 | |
| Sentra | 9.4:1 | |
| Stanza | 8.5:1 | |
| Van | 8.3:1 | |
| 240SX | 9.1:1 | |
| Compression Pressure | ||
| Axxess | 175 psi (12.3 kg/cm2 ) | |
| Pathfinder & Pickup | 192 psi (13.5 kg/cm2 ) | |
| Pulsar NX | 181 psi (12.7 kg/cm2 ) | |
| Sentra | 181 psi (12.7 kg/cm2 ) | |
| Stanza | 175 psi (12.3 kg/cm2 ) | |
| Van | 173 psi (12.2 kg/cm2 ) | |
| 240SX | 192 psi (13.5 kg/cm2 ) | |
| Minimum Compression Pressure | ||
| Axxess | 146 psi (10.3 kg/cm2 ) | |
| Pathfinder & Pickup | 142 psi (10.0 kg/cm2 ) | |
| Pulsar NX | 142 psi (10.0 kg/cm2 ) | |
| Sentra | 142 psi (10.0 kg/cm2 ) | |
| Stanza | 146 psi (10.3 kg/cm2 ) | |
| Van | 128 psi (9.0 kg/cm2 ) | |
| 240SX | 142 psi (10.0 kg/cm2 ) | |
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm2 ) | |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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