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Poor performance

Symptom: Poor performance

Poor performance


Fault symptom

Poor performance

Conditions

The following condition apply for the fault symptom concerned:


• No diagnostic trouble codes for this symptom description.


Diagnostic help

If diagnostic trouble codes are present then perform fault diagnosis on them first.

If there are no diagnostic trouble codes, check with the diagnostic tool that the reading Airmass / Combustion reaches a value of at least 1300 mg/combustion with wide open throttle and approx. 2500 rpm. In cases where the engine is not receiving sufficient amounts of air at each engine speed, the smoke limiting function will limit the permitted fuel quantity/combustion. Check for any blockages in the intake manifold before the turbocharger, e.g. wet air cleaner filter element, packed snow in the air inlet, leaves or the like. Check the fuel supply as well.