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 Isuzu Trooper S, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Compression
COMPRESSION SPECIFICATIONS
| Application | Specification | ||||
|---|---|---|---|---|---|
| Compression Ratio | |||||
| Amigo, Rodeo & Passport | |||||
| 2.2L | 9.6:1 | ||||
| 3.2L | 9.1:1 | ||||
| Hombre | |||||
| 2.2L | 8.9:1 | ||||
| 4.3L | 9.2:1 | ||||
| Trooper & SLX | 9.1:1 | ||||
| Compression Pressure (Minimum) | |||||
| Amigo, Rodeo, Passport, Trooper & SLX | |||||
| 2.2L | (1) | ||||
| 3.2L & 3.5L | 145 psi (10.2 kg/cm2 ) | ||||
| Hombre | 1100 psi (7.0 kg/cm2 ) | ||||
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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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