S4000 MK II Test Stand

The Merlin S4000 MK 2 is a fully automatic common rail test bench designed and developed with the following functions:-

Tests BOSCH, DENSO, DELPHI, SIEMENS and CAT/Perkins common rail injectors.


  • Bosch CRi & CRIN
  • Bosch, Denso and  Siemens Piezo
  • Delphi CR
  • Bosch CRIN 4.2
  • Bosch MTU
  • Cat/Perkins C4.4 - C6.6
  • Cat 9.3

Tests solenoid valve and Piezo injectors.

Automatically measures and displays delivered fuel quantity.

Tests the seal performance of injectors and delivery under different working conditions as follows:-

  • Pre-injection
  • Idle
  • Mid-range
  • Max fuel

Operator can add data and customer information. This data can be viewed printed and saved.

Equipped with original Bosch CP3 pump, rail, DRV and ZME.

Test oil temperature controlled to 40±2 °C, built-in cooling system.

Feeding pressure can be adjusted 0-6 bar.


  • Test injection & return volume under VL, TL, LL, VE and VE2 status.
  • Atomization test to check for blocked nozzles.
  • Sealing test to check for leaks.


  • Merlin S1000 all makes coding is available on this test bench.
  • Capability to generate IMA C2i/C3i and QR Correction code for each individual injector.
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    • 1 year warranty

      * Free UK Delivery on orders over £100 (Mainland UK only)
      Terms & Conditions

      • 25,000 Sqft Production Centre

        One of the largest and most sophisticated diesel workshops in the world

      • Merlin HQ

        Purpose-built distribution centre in Preston, Lancashire housing over 50.000 parts.

      • Test Equipment Division

        Design and manufacture of an ever evolving range of diesel injector and pump testing service equipment.

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