If the injector(s) suffer from excessive back leakage, the fuel pump cannot generate enough pressure to let the system operate correctly. Pressure loss on a common rail fuel system can often result in poor or no engine starting, rough running and poor acceleration.Ī common reason for pressure loss is excessive fuel being returned to the fuel tank (also referred to as ‘back leakage’). Laser Tools offer a number of diesel technology-based tools and the tool we are focusing on in this article is suitable for common rail diesel engines. As the diesel engine becomes more efficient, and therefore more popular, with most manufacturers offering them right across their ranges, maintenance and understanding of these systems is obviously becoming more and more important in the automotive industry.
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