• Precision Diesel Injector Diagnostics, Testing & Manufacturer-Approved Repairs

  • At Diesel Engineering Services, we provide a full manufacturer-authorised injector testing and repair service for all major diesel injection systems. Whether you're operating a car, commercial vehicle, or off-highway equipment, we restore your injectors to peak performance using OEM-grade parts and advanced diagnostic tools.

Brands We Service

We test and repair diesel injectors from leading manufacturers, including:

Legacy systems such as Bryce, Gardner, Lucas, CAV, Minimec, Motorpal


Our services cover all sectors – from automotive and agriculture to heavy-duty commercial and industrial applications.

Our Test Benches

  • Bosch DCI700

  • Bosch EPS815

  • Hartridge Cri Pro

  • Hartridge Cri PC

  • Hartridge AVM2PC

  • Carbon Zapp EBTRX

  • Carbon Zapp MTBR

State-of-the-Art Injector Testing

Our workshop is equipped with seven dedicated injector test benches, designed to meet the specific requirements of each manufacturer. Every injector is rigorously tested before and after repairs to ensure accuracy, flow rate, and spray pattern meet OEM specifications.

Why Choose Diesel Engineering Services?

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Manufacturer-Approved

Approved to test and repair Bosch, Delphi, Denso, Stanadyne & VDO systems

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OEM Components

We use only genuine or approved replacement parts for lasting reliability

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Experienced Technicians

Our team brings decades of injector-specific knowledge to every job

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Quick Turnaround

Ask about our service exchange units for minimal downtime

Service Exchange Injectors

Need to get back on the road quickly? We stock a wide selection of fully refurbished diesel injectors available as service exchange units, allowing for fast replacements without the cost of new units.