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Fuel rail with injectors - right bank Gen 1 · Power Solutions International
Injectors and injection nozzles for diesel engines: fuel atomisation, calibration values, failure patterns and replacement checks
The injector, or injection nozzle, delivers finely atomised fuel into the combustion chamber at a precisely controlled moment; in common rail systems, a solenoid or piezoelectric valve opens against rail pressure and allows several injections per cycle (pilot, main and post injection), which reduces combustion noise and raw emissions.
Nozzle hole count, diameter and spray angle are matched to the combustion chamber geometry and emission stage of the relevant engine family; common rail injectors also carry an individual correction value, often called an IMA or C2I code, that must be entered into the control unit after repair to compensate for that injector's flow deviation. The assignment list on this page comes from official US EPA certification documentation.
Worn or leaking injectors cause an uneven idle, higher fuel consumption, smoke and misfires on individual cylinders; a sticking valve can let fuel enter the engine oil and raise the oil level; coked spray holes change the fuel spray pattern and increase soot and NOx output.
Replacement is matched by part number rather than outward shape, since several hole-count variants share the same physical size; check the sealing surfaces at the cylinder head and the return lines for damage; after replacement of common rail injectors, entering the individual calibration value and running an injector balance in the control unit is required. Price and availability are not covered on this page.
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| Power Solutions International 8.8L 270 LPG | Heavy-Duty-Straßenmotoren |
Excludes price and availability — those come from the supplier.