312000563 - D014 ENGINE CUTS OUT WHEN IDLING (THEN RESTARS)

The customer complains that: The engine cuts out whilst it is running; it can be restarted.
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation

Check:

  • Wiring on engine correctly fastened to earth;
  • Battery correctly fastened to earth;
  • Positive battery pole and all leads connected to it are correctly fastened
  • Leaks from the low pressure diesel circuit.
  • Leaks from high pressure diesel circuit.
  • Fuel level okay
Move on to Step 11. Supply fastenings slack or oxidized.2. Earth fastenings slack or oxidized3. Leaks from the low pressure circuit.4. Leaks from high pressure circuit5. Fuel level too low1. Restore correct fastenings    See E1010 POWER SUPPLY 2. Restore correct fastenings    See E1010 POWER SUPPLY 3. Restore correct system seal.4. Restore correct system seal.5. Top up the fuel to the correct level.
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the Examiner to the engine management control unit and check that there are no errorsEnd of diagnosisPresence of errorsContinue as instructed by the diagnostic equipment.
2INJECTOR SEAL CHECKAll OKProblems encounteredOperation
Check that the diesel leaks from the injector recirculation connections are small (seepage) and roughly equal to one another.    See Test 1060OC INJECTOR SEAL TESTMove on to Step 3Significant leak from one injectorReplace the injector    Op. 1060F11 INJECTOR ONE R R
3HIGH PRESSURE CHECKAll OKProblems encounteredOperation
Check that the diesel pressure parameter is correct.    See Test 1060OD HIGH PRESSURE FUEL CIRCUIT CHECKMove on to Step 9Pressure not correctMove on to Step 5
4LOW RETURN PRESSURE CHECKAll OKProblems encounteredOperation
Check that the pressure in the return pipe to the tank is correct.    See Test 1060OA LOW FUEL RETURN PRESSURE CIRCUIT CHECKMove on to Step 5Pressure above the maximum limit: return pipe to the tank obstructedRepair the pipe; if necessary, replace it
5LOW SUPPLY PRESSURE CHECKAll OKProblems encounteredOperation
Check that the diesel fuel pressure between the filter and presssure pump is correct.    See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECKMove on to Step 6Pressure below the minimum limit or above the maximum limitMove on to Step 8
6LOW SUPPLY PRESSURE CHECKAll OKProblems encounteredOperation
Check that the difference in pressure upstream and downstream of the filter is less than 1 bar.See Test Move on to Step 7Difference in pressure more than 1 barReplace the fuel filter cartridgeOp. 1044B20
7LOW SUPPLY PRESSURE CHECKAll OKProblems encounteredOperation
Measure the difference in pressure between the electric pump outlet and the filter inlet and check that it is less than 0.3 barMove on to Step 8Difference in pressure more than 0.3 barReplace the pipe
8LOW PRESSURE ELECTRIC PUMP CHECKAll OKProblems encounteredOperation
Check that the supply voltage for the pump is correctCheck that the current absorption for the pump is correctMove on to Step 91. Supply voltage not correct2. Current greater than 10 A: pump defective3. Current less than 2 A: pump obstructed1. Renew electrical wiring    See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT 2. Replace the fuel pumpOp. 3. Replace the fuel pumpOp. and clean the fuel tank
9CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R if the previous checks have not yielded results, check that the fault is no longer presentEnd of diagnosis