TROUBLESHOOTINGTNV IDI Service Manual 13-5Troubleshooting By Measuring Compression PressureStandard Compression PressureEngine compression pressure list (reference value)Engine Speed and Compression Pressure (Use for Reference)Figure 13-2Engine Model Compression Pressure at 250 rpm (250 min-1) Deviation Between CylindersStandard Limit2TNV703TNV70470 ± 15 psi(3.24 ± 0.1 MPa; 33 ± 1 kgf/cm²)370 ± 15 psi(2.55 ± 0.1 MPa; 26 ± 1 kgf/cm²) 29 to 43 psi(0.2 to 0.3 MPa; 2 to 3 kgf/cm²)3TNV76 498 ± 15 psi(3.43 ± 0.1 MPa; 35 ± 1 kgf/cm²)399 ± 15 psi(2.75 ± 0.1 MPa; 28 ± 1 kgf/cm²)569 psi(40 kgf/cm2)498 psi(35 kgf/cm2 )427 psi(30 kgf/cm2 )356 psi(25 kgf/cm2)285 psi(20 kgf/cm2 )200 250 300 350 400Engine Speed (min-1 )Compression Pressure 3.92 MPa3.43 MPa2.94 MPa2.45 MPa1.96 MPa0001915
