Diagnostic Services

Stop guessing. Start diagnosing properly.


  • Email:

    info@diagnostics.wales

  • Booking:

    Call for an appointment

  • Address:

    Llandow Tuning
    South Wales Dyno Center
    11 Sambucas Ave
    Llandow Trading Estate
    Cowbridge
    CF71 7PB

  • Hours:

    By appointment


Engine Issues and Running Faults

Diagnosis for non-starts, hard starting, misfires, hesitation, limp mode, uneven idle, smoke, warning lights and faults that return after parts have already been changed. Your engine talks. We translate.

  • Engine management fault code interpretation with live data checks.
  • Classic car running issues including ignition, fuelling and setup concerns.
  • Carburettor running problems, adjustment issues and symptom-led testing.

Fuel, Carburettor and Jetronic Systems

Fuel delivery faults can feel electrical, mechanical or software related. Testing narrows the fault before expensive component replacement. Fault codes are easy. Fixing them is not.

  • Petrol and diesel fuel injector testing.
  • Fuel pressure, delivery and control checks.
  • Jetronic injection diagnosis for older petrol vehicles.

ECU Testing, Repairs, Cloning and Programming

Control unit issues need careful handling. Work can include testing suspected ECUs, arranging repair paths, cloning replacement units and programming where supported.

  • ECU fault investigation and bench testing routes.
  • Cloning and programming support for replacement modules.
  • Repair guidance where the original unit can be recovered.

AdBlue, EGR and DPF Issues

Emissions faults are often linked to sensor readings, blocked flow, pressure errors, temperature readings, wiring faults or failed components elsewhere in the system. Turning warning lights into clear answers.

  • AdBlue countdowns, dosing faults and warning messages.
  • EGR flow and position related issues.
  • DPF pressure, regeneration and sensor fault diagnosis.

Vibration Analysis

Vibration concerns can be measured and compared instead of judged by feel alone. This helps identify engine, driveline, wheel, rotating assembly and load-related patterns.

Discuss a fault