Diesel Engine Repairs & Diagnostics Karratha
Fault codes, hard starting, power loss, smoke and overheating. We diagnose diesel engines on site and fix the cause, not just the symptom.
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Diesel engine problems we fix
| Symptom | What we check |
|---|---|
| Hard starting or won’t start | Batteries and starting system, fuel supply, filters, air in fuel, glow or intake heaters |
| Loss of power | Air filter restriction, fuel filters and contamination, boost and intake leaks, sensors and fault codes |
| Black smoke | Air restriction, turbo and intake faults, injector problems |
| White or blue smoke | Fuel and timing problems, coolant or oil getting into the combustion chamber |
| Overheating | Blocked radiator, coolant level and leaks, fan and belts, thermostat, water pump |
| Warning lights and fault codes | Code read-out, sensor and wiring tests, after-treatment faults |
Diagnostics first
Modern diesel engines are run by electronics. A single failed sensor or damaged wire can put a machine into limp mode or shut it down. We read the fault codes, test the systems involved and confirm the cause before replacing parts, so you don’t pay for parts you didn’t need.
If you can, take a photo of the fault codes on the display before you call 0407 497 068. It helps us plan the job.
The Pilbara usual suspects
- Dust. Blocked air filters and radiators cause a large share of the power loss and overheating we see.
- Fuel contamination. Water and dirt in fuel, often from storage tanks and drums, block filters and damage injectors.
- Heat. High ambient temperatures leave less cooling margin, so small cooling problems show up quickly.
- Batteries. Heat shortens battery life. Weak batteries cause hard starting and odd electrical faults.
When to stop the engine
Stop and call if the temperature gauge is climbing into the red, oil pressure warnings come on, you hear new knocking, or there’s heavy smoke. Running an engine through these can turn a small repair into an expensive one.
What to have ready when you call
- The machine: make, model and rough size (for example a 20 tonne excavator or a wheel loader).
- Hour meter reading, if you can see it.
- What happened: what it was doing when it failed, any noises, smoke, leaks or warning lights.
- Any fault codes on the screen. A photo of the display on your phone is perfect.
- Where it is: the address or site, and how to get to the machine.
- Site rules: any induction, PPE, permits or escort needed before we can start work.
Related services
Heavy equipment servicing · Mobile heavy equipment repairs · Excavator repairs
Frequently asked questions
Can you read diesel engine fault codes on site?
Yes. Send a photo of the codes when you call and we’ll plan the visit around them.
Why is my machine losing power?
Common causes are a blocked air filter, dirty or contaminated fuel, boost leaks, or a sensor fault putting it into limp mode.
Why does my diesel engine overheat in summer?
Dust-packed radiators and coolers, low coolant, a slipping belt or a sticking thermostat. High Pilbara temperatures leave little margin.
Do you rebuild engines?
We diagnose and repair engines on site. If a full rebuild is needed, we’ll tell you and help you plan it.