Impreza WRX F4-2.0L DOHC Turbo (2004)
Compression Check: Pressure, Vacuum and Temperature Specifications
Compression Inspection
Wide Open Throttle (350 rpm)
Standard pressure................................................................................................................................... 981-1,177 kPa (10-12 kgf/cm2, 142-171 psi)
Limit pressure ............................................................................................................................................................ 882 kPa (9.0 kgf/cm2, 121 psi)
Difference between cylinders .......................................................................................................................................... 49 kPa (0.5 kgf/cm2, 7 psi)
Note: Perform at least two measurements per cylinder, and make sure that the values are correct.
