The testing device should be able to:

* fire injectors at a preset pulswidth

* set a number or time of injections

* check flow a minute

* check spray pattern

* cleaning the injectors with solvent instead of fuel

* Measure Ramp-up time.

* Measure Ramp-down time.

* Measure flow decline with lowering voltage.

Searching the internet for a simple PIC controller i found the website of [Roman Black]

with his shift1 project. The shift1 could be used for its timer and LCD features and having the PIC driving 1 or more LM1949 cirquits to drive the injectors.

The injectors can be holded by a bracket wich connects fuel line and a fuel sensor so measring flow at diffrent fuel pressures gives a idea of the volume the injectors can flow at lower or higher pressures. Spraying must be done in a glassy box or tube.

A long glass flowerpot for a single injector or a old fishtank for multiple injectors can be used.

To be continued.