Mechanical Inspection: Compression
WARNING: This page is about a different car, the 1995 Toyota Previa. However, it is still accessible from the selected car via links, so may be relevant.
Check engine mechanical condition with a compression gauge, vacuum gauge, or engine analyzer. See engine analyzer manual for specific instructions.
WARNING:
DO NOT
use ignition switch during compression tests. 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 the engine's oiling system.
COMPRESSION SPECIFICATIONS
| Application | psi (kg/cm2 ) |
|---|---|
| Normal Compression Pressure | 178 (12.5) |
| Minimum Compression Pressure | 128 (9.0) |
| Maximum Variation Between Cylinders | 14 (1.0) |