Engine Compression
WARNING: This page is about a different car, the 1997 Lexus SC 400. However, it is still accessible from the selected car via links, so may be relevant.
To check engine compression, bring engine to normal operating temperature. Remove air intake hose from throttle body. Remove all spark plugs. Fully open throttle. Ensure engine cranking speed is at least 250 RPM when measuring compression.
COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 10.4:1 |
| Compression Pressure | 178 psi (12.5 kg/cm2 ) |
| Minimum Compression Pressure | 142 psi (10.0 kg/cm2 ) |
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm2 ) |