Diesel Fuel Pumps & Injectors
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Our Speciality
Diesel Fuel Injection Specialists
First Diesel Services offers comprehensive fuel injection services for nearly all diesel systems on the market today. Each year, we diagnose and repair hundreds of diesel fuel pumps, using both Original Equipment Manufacturer (OEM) and high-quality aftermarket components sourced from around the world.
We specialize in both full and partial repairs of VE and inline fuel pumps. Our deep expertise in these critical components ensures your diesel engine’s optimal performance and extended longevity.
Testing and Calibrating
Industry Leading Equipment
Our workshop is equipped with the latest testing equipment for both Bosch and Denso common rail injectors. We can accurately diagnose injector health within hours and source most replacement injectors in a day. Unlike older indirect injection systems, common rail technology allows for the replacement of only faulty injectors, saving you time and money.
Fuel Injection Systems
How Does Common-Rail Work?
Common Rail Diesel systems entered the passenger market back in 1995 by Denso and are now becoming the standard for diesel fuel injection. Each fuel injector is mounted directly above the piston within the cylinder head (there is no pre-chamber) and is connected to the fuel rail by steel lines that can withstand the high pressure.
This high pressure allows for a very fine injector orifice that completely atomizes the fuel and rules out the need for a pre-chamber.
The actuation of the injectors comes via a stack of piezo electric crystal wafers that move the jet needle in tiny increments allowing for the spray of fuel. Piezo crystals function by growing rapidly when an electric charge is applied to them.
Like the fuel pump, the injectors are also controlled by the engine’s ECU. They can be fired in rapid sequence several times during the injection cycle. With this precise control over injector firings, smaller, staggered quantities of fuel delivery can be timed over the course of the power stroke to promote complete and accurate combustion.
In addition to timing control, the short duration, high-pressure injections allow a finer and more accurate spray pattern that supports better and more complete atomization and combustion.
Common rail injectors are crucial components in modern diesel engines, responsible for precise fuel injection timing and quantity. Malfunctioning injectors can lead to decreased engine performance, fuel economy issues, increased emissions, and even engine damage. Our expert technicians can identify injector problems such as wear, leakage, or blockage through advanced testing procedures.
Benefits of Common Rail
- Better Fuel Economy
- Cleaner Emissions
- Quieter Engine Running
- More Power
Diesel Fuel Pumps
Why Do Fuel Pumps Fail?
The primary causes of fuel pump wear or failure include fuel system contamination, clogged or absent filters, and corrosion due to water in the fuel. Even minuscule particles, as small as 10 microns (0.01mm), can significantly impact a fuel pump’s performance and lifespan. Regular fuel filter replacements and using high-quality diesel fuel can help prevent these issues.
Worn & Damaged Fuel Pumps Can Cause:
- Fuel pressure drop
- Lean mixture
- Rought idling
- Poor performance
- Spluttering at high engine RPM
- Hard starting
- Excessive noise
- High current draw
- Fuel pressure fluctuations or surge
Pumps & Injectors
Service Exchange
Our service exchange program gives you immediate access to a rebuilt and tested set of injectors or pumps in exchange for your used ones, saving you both time and money. If you have already removed the injectors or pump from your vehicle or equipment, providing us with the pump and injector body numbers will help expedite the process.
Call our team on (02) 4731 1188 for price and availability.
Contact Us
Send Us A Message
For any inquiries, please fill out our contact form or give us a call during business hours on 02 4731 1188. We're here to assist with all your diesel repairs and maintenance and are committed to delivering an exceptional service.