Hi Techs
Would someone guide me please as to how one checks the leak off on CR Piezo Injectors.
I purchased the Sealey Kit today but it comes with no instructions.
What pressure can one expect for a good Piezo injector and what pressures would indicate a faulty injector.
Also I notice the gauges measure negative pressure as well....negative pressure on a return line????

Thank you very much.
Regards
Eamonn