1.Disassemble the Solenoid valve from the C7/9 injector. And also the the spring, and spring spacer.

how to adjust the Remaining distance between the control valve and solenoid for C7 C9 C-9 injector

2.  Calibrate dial gauge to ZERO, then check the gauge shaft flexibility

how to adjust the Remaining distance between the control valve and solenoid for C7 C9 C-9 injector

3.  Set the tool upon the control valve, the stardard stroke should be “280”

how to adjust the Remaining distance between the control valve and solenoid for C7 C9 C-9 injector

4. According to the adjustment shim sizes to fix it

how to adjust the Remaining distance between the control valve and solenoid for C7 C9 C-9 injector