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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 & SC300 192 psi (13.5 kg/cm2 )
GS400, LS400 & SC400 178 psi (12.5 kg/cm2 )
LX470 192 psi (13.5 kg/cm2 )
RX300 218 psi (15.3 kg/cm2 )
Minimum Compression Pressure
ES300 145 psi (10.1 kg/cm2 )
GS300 & SC300 156 psi (11.0 kg/cm2 )
GS400, LS400, LX470 & SC400 142 psi (10.0 kg/cm2 )
RX300 145 psi (10.1 kg/cm2 )
Maximum Variation Between Cylinders
All Models 14 psi (1.0 kg/cm2 )