Your local Diesel Mechanic in Mount Isa

  • Efficient Repairs
  • Affordable Prices
  • Meticulous Diagnostics

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A Man is Working on a Truck in a Garage — Secure Diesel & Automotive in Ryan, QLD

Mount Isa Diesel mechanic

Searching for an expert diesel mechanic in Mount Isa? At Secure Diesel & Automotive, we specialise in diesel engine repairs for cars, trucks, buses, 4x4s, and heavy-duty equipment. Our experienced team is committed to delivering efficient, accurate repairs that keep your engine performing at its best.


We handle everything from diagnostics and overhauls to turbocharger servicing and fuel system repairs. Whether you're running a work ute or managing commercial machinery, we know how to get to the root of the problem quickly.


Our focus is on minimising downtime while maximising reliability and power.

Your diesel engine deserves specialised care from technicians who understand what it takes to keep it running strong. Call 0467 584 452 to book your diesel service today. Our diesel mechanics service a 300km radius surrounding Mount Isa, including Cloncurry, Boulia and Julia Creek.

Examples of our diesel services

We offer a wide range of diesel-specific services designed to keep your engine operating smoothly, efficiently, and reliably. Our team is equipped to handle complex diagnostics and hands-on repairs with precision and care:


1. Engine Overhauls: We completely strip down and rebuild diesel engines to restore power and reliability.

2. Turbocharger Servicing: We inspect, repair, or replace turbochargers to optimise engine performance and fuel efficiency.

3. Fuel System Repairs: We diagnose and fix issues with injectors, pumps, and fuel delivery systems for clean, consistent combustion.

4. EGR and DPF Cleaning: We clean and restore exhaust gas recirculation and diesel particulate filters to reduce emissions and improve function.

5. Cooling System Maintenance: We repair radiators, water pumps, and hoses to prevent overheating and engine damage under load.


Keep your vehicle running strong with a trusted diesel mechanic in Mount Isa. Reach out to us today to book a service.

A Man is Working on the Engine of a Red Truck — Secure Diesel & Automotive in Ryan, QLD

FAQs

  • What’s the difference between a diesel and petrol engine?

    Diesel engines use compression ignition, while petrol engines rely on spark ignition. Diesel engines typically offer better fuel efficiency and torque, making them ideal for heavy-duty vehicles. However, they also require specific maintenance due to higher internal pressures and more complex fuel systems.

  • How often should I service my diesel vehicle?

    Most diesel vehicles should be serviced every 10,000 to 15,000 kilometres, or as recommended by the manufacturer. Regular servicing helps maintain fuel efficiency, prevent costly repairs, and ensure the engine runs reliably under load. Heavy-duty or high-use vehicles may need more frequent attention.

  • Why is my diesel engine smoking?

    Excessive smoke could indicate fuel injection issues, turbocharger failure, clogged filters, or worn engine components. The smoke colour—black, white, or blue—can help identify the source of the problem. It’s important to have the engine inspected to determine the cause and avoid further damage.