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New Cost Effective Maintenance solution addresses Common Rail Diesel problems

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Cost Effective Maintenance has developed a solution to address problems in the Common Rail Diesel (CRD) injection system.

The most recent development to achieve stringent diesel exhaust emission standards, the Common Rail Diesel (CRD) injection system is currently associated with widespread problems, including engine rattles, expensive injector and fuel pump failures, injector sticking, stalling and rapid piston and liner wear. Problems have been documented across a wide range of engine suppliers, including Toyota, BMW, Volkswagen and Nissan among many others.

Cost Effective Maintenance has specifically developed the CRD fuel enhancer to address rattles, and provide smooth operation of fuel pumps and injectors. Routine use of the CRD system will increase the service life of fuel systems and minimise the potential for these problems.

The CRD system requires a significant increase in operating pressure compared to earlier systems. Fuel system pressures of up to (and above) 29,000 psi are required, and combined with ultrafine tolerances of diesel pumps and injectors, achieve superior fuel atomisation for cleaner combustion. 

Compared to earlier diesel injection systems, several factors place significant additional stress on this system, including increased operating pressure causing higher loading on equipment, and placing a bigger demand on the fuel’s lubricating ability; higher pressure causing higher fuel temperatures, which can actually degrade the fuel, forming fouling deposits within pumps and injectors; lower diesel sulphur levels to reduce smoke emissions resulting in greater wear to expensive fuel pumps and injectors as sulphur provides lubrication; and CRD engines being more susceptible to deposits, and also the presence of any water contamination in the fuel as they are designed with much finer tolerances within pumps and injectors, as well as piston to liner clearances. 

Additionally, CRD injectors can be called on to inject diesel into the cylinder up to five or more times per firing cycle, and therefore must respond instantaneously. Any delay caused by contamination or poor fuel lubricity commonly results in excess fuel being pumped in, causing poor fuel economy, and also more soot out the exhaust, and through the EGR (exhaust gas recirculation) valve, leading to choking inlet manifold build-up. 

The CRD fuel enhancer provides strongly enhanced fuel lubricity, superior deposit control for fuel pumps and injectors, and exceptional anti-rust/ anti-corrosion protection. While it’s recommended as a routine preventative step for CRD engines, it has been shown to eliminate severe injector rattle, and restore operating performance and economy. Designed specifically for Common Rail Diesels, it is also suitable for all diesel engines. 

Many Common Rail Diesels are also prone to building high levels of soot in the oil. For this reason, Cost Effective Maintenance also recommends using the Flushing Oil Concentrate. 

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