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Merlin Ref No. YDT720

Excl. Tax: £1,027.50 Incl. Tax: £1,233.00

Availability: In stock

Next Day UK Delivery Order in: 0: 0: 0

  • 30 day return policy
  • Free UK delivery*
  • 1 year warranty




Delphi YDT 720 Electronic Injector Test Kit

With today’s Common Rail injector technology, it’s no longer sufficient to just measure resistance to check a coil’s health – you also need to measure inductance for an immediate and accurate assessment. Previously separate tools would have been needed for this. Not with our Electronic Injector Test kit. Otherwise known as the ‘buzz tool,’ or part number YDT720, you’ll be able to quickly test the electrical integrity of all makes of solenoid Common Rail injectors on vehicle.

The simple,hand-held tool measures the injectors core criteria, allowing you to quickly compare values and identify if any are not within a comparable performance range, or confirm specific electronic failures which may indicate an unrepairable injector. You can also use it in conjunction with our solvent cleaning kit to resolve early-stage lacquering. All with just one tool, saving significant time and cost for the garage.

Features and Benefits:

  • Quick and accurate diagnostics of all makes of solenoid Common Rail injectors both on and off vehicle.
  • Combines a digital multimeter, megohmmeter, millohmeter, LCR (inductance/capacitance/resistance) meter and signal generator into a single, economical and easy to use hand-held tool.
  • Allows the user to compare values between the injectors and identify individual injector failures.
  • Provides capability to check electrical integrity of an injector prior to commencing repair.
  • Tests both coil resistance and inductance for an immediate and accurate assessment.
  • Ability to drive the valve to make it BUZZ, proving the valve is not stuck from lacquering deposits.
  • Complete range of adapter cables supplied with the kit for all-makes coverage.
  • Resolve early-stage lacquering when used in conjunction with the Delphi Solvent Cleaning Kit and dedicated solvent cleaning solution.

Functions as follows:

  • Measures resistance and inductance of the coil in the injector.
  • Tests for coil open/short circuits.
  • Checks the insulation of coil to injector body.
  • Drives the valve to make it BUZZ, proving the valve is not stuck.
  • Significant time and cost saving.

Please click the above Logo for a Delphi Tutorial on this product

Additional Information

Additional Information

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

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UK Delivery

24 hour delivery applies to UK mainland only excluding highlands and islands.


A surcharge is like a deposit or refund.

You can send in your old un-wanted injector or pump and we will refund you the surcharge amount you pay at checkout.

When we have inspected your old unit to meet our condition requirements, we will credit you directly into the account of your choice. Please enter your bank account number and sort code on the 'Old Unit Return' form.

Please print and adhere to our ‘Old Unit Return Procedure’ here.

Please re-use the packaging we send out your purchase in, to return the old unit.

If you do not wish to return the old unit the surcharge will become invalid from the date on ‘Old Unit Returns Procedure’


Most modern diesel injectors will need an ECU Correction Code (IMA, C2i-C3i, QR).

When replacing a Diesel Common Rail injector, it is necessary to register the Correction Code, located on the upper part of the injector, into the vehicles ECU.

The Correction Code is used to compensate injector production tolerances, this ensures the ECU balances the injector output to optimise performance and efficiency.