For visually testing injector flow rate via return lines - Allows for simultaneous testing of up to 8 injectors.

The DM13-0508 common rail diesel injector return flow testing or leak-back test kit is designed to measure the fuel leak- back from each individual injector to identify mechanical issues within the injector. 
It is a comparative test where each injector is connected to a calibrated measuring flask and the engine is operated through its range for a set period and the leak-off is read and compared to the rest of the injectors. 
In general, the injector with a greater leak-off is injecting less fuel, and therefore that cylinder is producing less power. 
The injector with less leak-off is possibly injecting excess fuel and that cylinder may be experiencing knocking. 
Both of these conditions can lead to engine failure. 
Refer to the manufacturer's specifications for precise specifications. 
This kit is designed for non pressurised return, solenoid type systems. It comes with a range of fittings to suit Bosch, Delphi, Denso, VDO/ Siemens injectors.

Kit contents:
1 container with 8 fuel-resistant
8 highly flexible hoses, 1.2M for each
8 adapters for BOSCH injectors
8 adapters for DELPHI injectors
8 adapters for DENSO injectors
8 adapters for VDO/SIEMENS injectors
1 Hose Clamp
1 Spring
1 Hook
Comes in convenient carry case

This is a more expensive kit than some on the market, however this is a professional grade unit for professional workshops.