Common Rail Diesel service and Repair

Common Rail Diesel service and Repair


Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines, with a high-pressure pump storing a reservoir of fuel at high pressure (2,000 bars / 200 MPa / 29,000 psi). The term “common rail” refers to all of the fuel injectors being supplied by a common fuel rail (a pressure accumulator where the fuel is stored at high pressure).

An obvious choice for heavy-duty transportation and equipment, diesel engine provides higher mileage than a petrol car. With more everyday motorists turning to cost efficient diesel engines, it is crucial to have a trusted mechanic to help you keep your car moving forward. The Common Rail system in particular allows engines to be developed with lower exhaust emissions and reduced engine noise. With flexible division of injection into several pre-, main and post-injections, the flexible design of Common Rail allows excellent compatibility and matching of the engine and injectin system. Pre-injection modifies the acoustic hardness, the co-called ‘rattling’ of the combustion process. Post-injection happens specifically to raise the temperature of the exhaust gas and therefore for regeneration of the standard diesel particulate filter. These factors together allow exact, highly efficient combustion. Modern common rail systems are governed by an engine control unit (ECU) which opens each injector electronically rather than mechanically. Common rail engines require a very short heating-up time, lasting only a few seconds. Due to extremely quick reaction time in milisecond range up to 5 separate injection processes can be achieved per cycle which are all also variable. Depending on ambient temperature, the start-up can be immediate.

Car Service Salisbury is your local professinal technician, we can maintain your diesel, gas or petrol car so it works at top condition and reliably takes you where you need when you need it. Call us now or make a car service appointment online!


Car Service Salisbury mechanics test, service, repair and remanufacture all makes and models of Common Rail Diesel injector engines. With the development of common rail system, the previously sometimes noisy and clunky diesels have been reconstructed in a more powerful, responsive and environmentally friendly engines.

In a common rail system, a high pressure pump delivers fuel to the rail, where electronic injectors are opened to inject fuel into the cylinders. These systems are extremely complex and parts are expensive, requiring careful diagnosis. With huge pressure inside those systems and the clearance being around 0.002mm, the service area is kept squeaky clean and stringent attention is paid to fixing the incredibly precise components.

Car Service Salisbury carry out diagnostics and repairs on common rail diesels – we check if you have loss of power, the engine is cutting out, does not start or is starting poorly, engine light remains on, smoke emits from exhaust and any other problems.

Always have your car serviced regularly using parts and fluids designed specifically for your vehicle. Regularly check oil and coolant levels – if the engine starts consuming any fluids excessively, get your car checked out. Notice any difference in engine performance, warning lights, noise, smoke, starting, or vibration? Get your car to your trusted mechanic and have the car inspected, since a simple fault can often affect additional car components resulting in a very expensive damage.

Call Car Service Salisbury now or make a car service appointment online!