GMTO Common Rail Return Flow Tester Pro Set

1,250.00 ex. VAT

GMTO common rail return flow tester pro set

1 in stock (can be backordered)

Product Description

GMTO common rail return flow tester pro set

Common rail return flow tester for use with ATS5004D and ATS605004D/HS6DIFF oscilloscope

Allows you to test common rail return flow while driving / under load and displays the readings through the software.
The has a huge advantage over testing with leak back bottles as with the bottles test on the floor you are not getting near max pressure and therefore wont be getting a true reading
And also for vehicles with piezo injectors this set allows you to check the return flow while still having the vehicles return pressure regulator still in place

The PRO version is complete with special reducers, connections and quick couplings.

The RFS 400 PRO is connected via hoses to the return connection of the injectors. The RFS 400 PRO is linked to the GMTO automotive scope, so that the return flow can be digitized. This allows the injectors in the car to be tested in the workshop and on the road and without dismantling. The digital image can be saved or printed to serve as proof for the repair advice.

By means of the pre-set measurements in the ATIS software program, the values ​​are indicated exactly in flow ml/min in the scope screen.

Operation RFS 400 PRO:

By using highly sensitive sensors, placed in a sturdy housing, the RFS 400 PRO is able to accurately measure very small return flow from the common rail injectors. The measured values can be seen on the scope screen image by means of a graphic line and in numerical format. With the RFS 400 PRO and a GMTO 4-channel (automotive) scope, four return flows can be made transparent and compared. The measurement can be performed twice for several cylinders.


  • Effective measuring range 1 ml / min – 160 ml / min
  • Work stress 9 to 30 volts
  • The RFS 400 PRO has clamps to attach to the battery for power supply


  • Main unit
  • Connection hoses and couplings for Bosch coil type and piezo type injectors
  • Connection hoses and couplings for Delphi coil type and piezo type injectors
  • Connection hoses and couplings for Siemens/VDO/Continental injectors
  • Connection hoses and couplings for Denso coil type and piezo type injectors
  • 12 different types of connection sets

Product Specifications

Weight 4 kg
Dimensions 50 × 40 × 16 cm


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