01923 721194
Diesel Fuel Injection Services – Watford’s Specialist Engineers
Looking for expert diesel injector repair in Watford, Hertfordshire? At Diesel Fuel Injection Services (DFIS), we’ve been trusted by drivers, garages, and fleet operators for over 50 years. Our team specialises in diagnosing, repairing, and reconditioning diesel injectors and fuel pumps for cars, vans, trucks, agricultural machinery, and plant equipment.
Our Services
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Diesel Injector Testing & Repair
Using state-of-the-art Bosch and Delphi test benches, we quickly identify faults and restore performance. -
Fuel Pump Reconditioning
Full reconditioning and calibration of diesel fuel pumps to OEM standards. -
Commercial & Fleet Support
Fast turnaround for haulage companies, farmers, and contractors to keep vehicles on the road. -
Diagnostic Services
Accurate electronic fault-finding to save you time and money.
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Repairs and Diagnostics
Fuel Pumps and Injector Testing
Exchange Injectors and Fuel Pumps
Reconditioned and New Lift Pumps
Fuel Filter Assembly and Fuel Pipe
Injector Washers and Parts
Pressure Testing
New Fuel Pumps and Injectors
Full Service for common Rail Injectors and Fuel Pumps
Heater Plugs
Ultrasonic Cleaning of Parts
Vehicle Types
Tractors
Plant
Truck
Cars & Busses
Vehicle Repairs and servicing
Fault Diagnostics
Specialist vehicle servicing
Opening Hours
Mon - Fri: By appointment only
Sat: Closed
Sun: Closed