Using a professional test bench is the best way to test common rail injector, it would give you accurate testing result and guide your repair work very well.
The testing is easy, generally 4 steps are ok.
Step 1,
Install the injector on the bench and connect all cables
Step 2,
Choose the correct injector number on the bench.
Step 3,
Start testing. There are several testing steps in the program, all the testing process is automatic.
Step 4,
Vivid testing result will show you the injector is normal or not.