Petrol injectors

Basic injector test 

Using a screwdriver place it on the metal body of the injector and you should hear a metal click every time the injector open

Multimeter lead to terminals of injector this should give us a reading of around ...ohms ( check service manual for specification ), if you are not getting a reading  or it is not within specification the injector is defective

To check for ground/short set the multimeter to ohms then  + to body, - to body this test dis play .OL or 1. on the multimeter there should be no connection

Further testing

Now to check if the injector is spraying properly.

This machine will put it through flow testing and by visual you should be able to tell if the injectors are leaking or block. the spray pattern should be a clean cone shape not a drip.The level of fluid in each cylinder should also be the equal.