Free Troubleshooting Guides | United Fuel Injection

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Diesel Performance
TD42 Performance Upgrades

ECU Remapping & Diesel Tuning

Performance Upgrades

Turbocharger Upgrades

Pumps and Injectors

UFI Projects/Builds
TD42 Performance Upgrades
Transform your GQ or GU Nissan Patrol. As Australia’s leading TD42 specialists, we offer everything from mild touring setups to extreme 300hp+ builds. Featuring our legendary in-house 11mm and 12mm modified fuel pumps, custom UFI turbos, and complete drive-in, drive-out turbo conversion packages.
ECU Remapping & Diesel Tuning
Looking for reliable common rail diesel tuning? United Fuel Injection delivers custom ECU remapping backed by pre- and post-dyno readouts. Safely increase torque, improve drivability, and complement your mechanical upgrades with lifetime map backups.
Performance Upgrades
Maximize your diesel’s power, torque, and reliability. From precision ECU remapping and 4WD dyno tuning to high-flow exhausts and heavy-duty clutch upgrades, we deliver tailored performance packages for daily drivers, tow rigs, and tourers.
Turbocharger Upgrades
Engineered in-house and proven in Australia's harshest environments, our exclusive PSI by UFI turbochargers deliver massive low-down torque and reliable power. Tailored specifically for Nissan Patrol and Toyota Landcruiser platforms, these units are built for real-world touring, towing, and off-road driving.
Pumps and Injectors
Unlock massive torque with high-performance diesel fueling. Explore United Fuel Injection's range of modified TD42 fuel pumps (up to 300hp+) and upgraded high-flow common rail injectors for Toyota and Isuzu.
UFI Projects/Builds
Diesel Fuel Injection
Light Automotive

Heavy Diesel
Light Automotive
Keep your light diesel vehicle running at its best. As an authorised Bosch Diesel Centre, we offer expert diagnostics, pump repairs, and same-day injector replacements using genuine parts for Toyota, Nissan, Ford, Isuzu, and more.
Heavy Diesel
As WA's leading heavy diesel specialists, we keep your fleet moving. Operating one of the state's largest dedicated facilities, we provide advanced testing, diagnostics, and OEM-spec remanufacturing for mining, transport, agriculture, and marine fuel injection systems.
Turbochargers
Light Automotive

Heavy Diesel

Performance Upgrade Turbochargers
Light Automotive
Looking to repair or upgrade your vehicle's turbocharger? United Fuel Injection supplies, diagnoses, and overhauls light diesel and petrol turbos using only genuine components and precision high-speed balancing.
Heavy Diesel
Keep your heavy equipment moving. As WA’s premier heavy turbocharger remanufacturer, we provide brand-new OEM units, precision in-house overhauls, and a massive exchange program that cuts downtime and reduces costs by up to 70%.
Performance Upgrade Turbochargers
Upgrade your boost with the best in the industry. We supply off-the-shelf Garrett PowerMax bolt-on upgrades from our Malaga turbo workshop, and custom-engineer our renowned, high-torque UFI-branded turbochargers exclusively at our Redcliffe facility.
Repairs & Servicing
Diagnostics

Diesel Troubleshooting Guides
Diagnostics
Modern common rail diesel issues require pinpoint accuracy, not expensive guesswork. From persistent limp mode to power loss, we diagnose stubborn faults under real-world load conditions and provide transparent, comprehensive repair reports.
Diesel Troubleshooting Guides
Isolate diesel fuel system and turbo issues quickly. Access our free, downloadable diagnostic guides for inline pumps, distributor pumps, and turbochargers. Designed for easy on-site and workshop reference.

Diesel Fault Finding & Troubleshooting Resources

United Fuel Injection provides a range of diesel troubleshooting guides and fault-finding charts designed to assist technicians, workshops, and diesel equipment operators in diagnosing common fuel system and turbocharger problems.

These resources are developed from over 50 years of experience working with diesel fuel injection systems and turbochargers across automotive, transport, agricultural, marine, and industrial applications. Each guide provides structured diagnostic information to help identify common symptoms, potential causes, and recommended inspection points.

Whether you’re dealing with fuel pump performance issues, injector faults, or turbocharger problems, these guides provide a practical reference to support faster and more accurate diesel diagnostics.

Available Troubleshooting Guides

We currently offer the following downloadable diesel troubleshooting guides:

Inline Type Fuel Pump Troubleshooting Guide
- A comprehensive diesel fuel pump troubleshooting guide covering common issues associated with inline injection pumps. The guide includes diagnostic steps, common symptoms, and potential causes to assist with fuel system fault finding.
Distributor Type Fuel Pump Troubleshooting Guide
- This guide focuses on distributor-style diesel fuel pumps, outlining common failure points, performance problems, and troubleshooting procedures used to diagnose fuel injection system faults.
Turbocharger Troubleshooting Guide
- A practical two-page turbocharger troubleshooting chart designed to help identify common turbo faults. The guide links common symptoms such as low boost, excessive smoke, oil leaks, or noise with possible causes and inspection points.

All guides are available as downloadable PDF documents, making them easy to reference in the workshop or on-site when diagnosing diesel engine performance issues.

479 Great Eastern Highway, Redcliffe WA 6104

(08) 9259 3000

info@unitedfuel.com.au