Mechanical Inspection: Notes
Check engine mechanical condition using a compression gauge, vacuum gauge or engine analyzer. See engine analyzer manual for specific instructions.
WARNING:
Do not use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate engine oiling system.
COMPRESSION RATIO SPECIFICATIONS
| Application | Specification | |||||
|---|---|---|---|---|---|---|
| Compression Ratio | ||||||
| C70, S70 & V70 | ||||||
| Non-Turbo | 10.3:1 | |||||
| Turbo (1) | ||||||
| High Pressure (B5234T3, B5244T2) | 8.5:1 | |||||
| Low Pressure (B5244T3) | 9.0:1 | |||||
| S80 | ||||||
| Non-Turbo | 10.7:1 | |||||
| Turbo | 8.7:1 | |||||
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