Engine Compression
Check engine compression with engine at cranking speed with battery fully charged, engine at normal operating temperature, all spark plugs removed and throttle wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Normal Compression Pressure | ||
| ES300 | 218 psi (15.3 kg/cm2 ) | |
| GS300, IS300 & LX470 | 192 psi (13.5 kg/cm2 ) | |
| GS430, GX470, LS430 & SC430 | 178 psi (12.5 kg/cm2 ) | |
| RX300 | 213 psi (15.0 kg/cm2 ) | |
| Minimum Compression Pressure | ||
| ES300 | 145 psi (10.2 kg/cm2 ) | |
| GS300 & IS300 | 156 psi (11.0 kg/cm2 ) | |
| GS430, GX470, LS430, LX470, RX300 & SC430 | 142 psi (10.0 kg/cm2 ) | |
| Maximum Variation Between Cylinders | ||
| Except ES300 | 14 psi (1.0 kg/cm2 ) | |
| ES300 | 15 psi (1.1 kg/cm2 ) | |