Compression (Tacoma & 4Runner)
- Warm engine to normal operating temperature before checking the compression. Remove intake air connector for access to spark plugs. Intake air connector fits between air cleaner hose and throttle body.
- Disconnect electrical connectors at ignition coils. Remove spark plugs. Check engine mechanical condition with a compression gauge, vacuum gauge, or engine analyzer with throttle fully open. See engine analyzer manual for specific instructions. See COMPRESSION SPECIFICATIONS table. Install and tighten spark plugs to 15 ft. lbs. (20 N.m).
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Normal Compression Pressure | |||
| Camry | |||
| CNG Models | 252 psi (17.7 kg/cm2 ) | ||
| Gasoline Models | 178 psi (12.5 kg/cm2 ) | ||
| Camry Solara | 178 psi (12.5 kg/cm2 ) | ||
| Celica | |||
| 1.8L (1ZZ-FE) | 218 psi (15.3 kg/cm2 ) | ||
| 1.8L (2ZZ-GE) | 203 psi (14.3 kg/cm2 ) | ||
| Corolla | 218 psi (15.3 kg/cm2 ) | ||
| Echo | 213 psi (15.0 kg/cm2 ) | ||
| RAV4, Tacoma & 4Runner | 178 psi (12.5 kg/cm2 ) | ||
| Minimum Compression Pressure | |||
| Camry | |||
| CNG Models | 202 psi (14.2 kg/cm2 ) | ||
| Gasoline Models | 142 psi (10.0 kg/cm2 ) | ||
| Camry Solara | 142 psi (10.0 kg/cm2 ) | ||
| Celica | |||
| 1.8L (1ZZ-FE) & 1.8L (2ZZ-GE) | 145 psi (10.2 kg/cm2 ) | ||
| Corolla | 145 psi (10.2 kg/cm2 ) | ||
| Echo | 156 psi (11.0 kg/cm2 ) | ||
| RAV4, Tacoma & Runner | 128 psi (9.0 kg/cm2 ) | ||
| Maximum Variation Between Cylinders | |||
| Camry & Camry Solara | 14 psi (1.0 kg/cm2 ) | ||
| Celica | |||
| 1.8L (1ZZ-FE) | 14 psi (1.0 kg/cm2 ) | ||
| 1.8L (2ZZ-GE) | 16 psi (1.1 kg/cm2 ) | ||
| Corolla, Echo, RAV4, Tacoma & 4Runner | 14 psi (1.0 kg/cm2 ) | ||