HIGH PRESSURE DIESEL COMMON RAIL AND PETROL INJECTORS
With the introduction of electromagnetic solenoids and now the quicker operating Piezo high-pressure common rail fuel systems, we are experiencing an increase in engine problems due to the failure of these injectors. It has been found that a significant percentage of failures are caused by excessive return flow from the diesel common rail injectors, whilst the GDI petrol injectors are experiencing atomisation problems resulting in hard starting, erratic idling and lack of power.
With further progress, the Piezo operated injector was developed to help with faster reactions allowing for more controllable and quicker injection cycles. Great in principle but perhaps not very reliable hence the some of the manufacturers are going back to electromagnetic solenoid-operated injectors.
Having been in the motor trade for 4 generations, established in Shrewsbury since 1992 we have experienced the progression of the "internal combustion engine" from the earlier indirect injection engines to the present high-pressure, electronic, common rail systems and now GDI (gasoline direct injection) petrol injection systems.
We have seen many changes, some good and some bad but overall the diesel car has become economical, fun and exciting to drive with the performance that outstrips some of its petrol rivals.