3360204 - D01 ENGINE NOT RUNNING SMOOTHLY / (HESISTANT)

There are decreases in performance, possibly prolonged, during acceleration
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

First check:

  • the condition of the air intake circuit
Continue to Step 1Air intake circuit checkRestore correct operation of the intake circuit
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.

Verify:

  • that there are no faults in the engine management control unit
  • the plausibiilty of the parameters
Continue to Step 2'Fuel system' error appears See table   Z50  MIXTURE STRENGTH ERROR
'Fuel system' error appearsContinue following the instructions for the diagnostic equipment
'Fuel system' error appearsContinue following the instructions for the diagnostic equipment
2ROAD TEST WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Road test the vehicle, reproducing the conditions under which the fault arises, keeping the diagnostic equipment connected

Verify:

  • that there are no faults in the engine management control unit
  • the plausibiilty of the parameters
Continue to Step 3Error arises suddenly in the control unitContinue following the instructions for the diagnostic equipment
Error arises suddenly in the control unitContinue following the instructions for the diagnostic equipment
3CHECKING FUEL PRESSUREAll OKProblems metOperation
Carry out a road test, reproducing the conditions in which the fault arises. with the pipe constricted check that the filter outlet pressure remains below 2 bar.Check the fuel supply pressure Op. 0510C10Continue to Step 4Incorrect pressure: obstructions in the fuel delivery pipeRemove the obstructions in the fuel pipe, and if necessary replace it
Incorrect pressure: obstructions in the fuel delivery pipeRestore tank ventilation
Incorrect pressure: obstructions in the fuel delivery pipe Replace fuel pump assembly Op.   1040A70 
4CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persists: control unit defectiveReplace engine management control unit Op.   1056B82  Search for the fault starting from another symptom'