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.
1985 Subaru RXFACTORY OEM SERVICE PROCEDURE
Engine Compression
Check pressure with engine warm, plugs removed, throttle valve wide open and engine at cranking speed.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| 1.6L & 1.8L | 9.0:1 | |
| 1.8L Turbo | 7.7:1 | |
| Compression Pressure | ||
| 1.6L | 175 psi (12.3 kg/cm2 ) | |
| 1.8L | 171 psi (12.0 kg/cm2 ) | |
| 1.8L Turbo | 156 psi (11.0 kg/cm2 ) | |
| Minimum Compression Pressure | ||
| 1.8L Turbo | 117 psi (8.2 kg/cm2 ) | |
| All Other Models | 128 psi (9.0 kg/cm2 ) | |
| Max. Variation | 28 psi (2.0 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.