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.
1987 Audi 5000 CS, StandardFACTORY OEM SERVICE PROCEDURE
Engine Compression
Check compression with engine warm, all spark plugs removed and throttle wide open. Crank engine through at least 6 compression strokes per cylinder to determine engine compression.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||||
|---|---|---|---|---|---|
| Compression Ratio | |||||
| 2.22L Turbo | 7.8:1 | ||||
| 2.22L Non-Turbo | 8.5:1 | ||||
| 2.3L | 10:1 | ||||
| Compression Pressure (1) | |||||
| 2.22L Non-Turbo | |||||
| Normal (New Engine) | 130-174 psi (9-12 kg/cm2 ) | ||||
| Minimum | 100 psi (7 kg/cm2 ) | ||||
| 2.22L Turbo | |||||
| Normal (New Engine) | 100-130 psi (7-9 kg/cm2 ) | ||||
| Minimum | 72 psi (5 kg/cm2 ) | ||||
| Max. Variation Between Cylinders | |||||
| 2.22L Non-Turbo | 29 psi (2 kg/cm2 ) | ||||
| 2.22L Turbo | 44 psi (3 kg/cm2 ) | ||||
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Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.