312000565 - D021 ENGINE CUTS OUT WHILST RUNNING AND THEN RESTARTS

The customer complains that: The engine cuts out whilst it is running; it can be restarted.
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
Check that the air intake/vacuum circuit is working properlyCheck the condition of the fuel supply circuit and make sure that it is working properly.

Also check:

  • wiring on engine correctly fastened to earth;
  • battery correctly fastened to earth;
  • positive battery terminal and all leads connected to it correctly fastened
Move on to Step 11. Supply fastenings slack or oxidized2. Earth fastenings slack or oxidized1. Restore correct fastenings    See E1010 POWER SUPPLY 2. Restore correct fastenings    See E1010 POWER SUPPLY
1CHECK USING THE EXAMINERAll OKProblems encounteredOperation
Connect an Examiner to the engine control unit and check for errorsMove on to Step 2Presence 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, carrying out the    See Test 1060OC INJECTOR SEAL TESTMove on to Step 3Significant leak from one injectorReplace the injectorOp. 1060F10
3HIGH PRESSURE CHECKAll OKProblems encounteredOperation
Check that the high pressure diesel parameter is correct, carrying out the    See Test 1060OD HIGH PRESSURE FUEL CIRCUIT CHECKMove on to Step 10Pressure not correctMove on to Step 4
4LOW RETURN PRESSURE CHECKAll OKProblems encounteredOperation
Check that the pressure in the return pipe to the tank is correct, carrying out the    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 pressure between the filter and the pressure pump is correct, carrying out theSee Test Move on to Step 6Pressure below the minimum limit or above the maximum limitMove on to Step 7
6LOW SUPPLY PRESSURE CHECKAll OKProblems encounteredOperation
Check that the difference in pressure upstream and downstream of the filter is less than 1 barMove on to Step 7Difference in pressure more than 1 barReplace the fuel filter cartridge    Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE
7LOW DELIVERY PRESSURE CHECKAll OKProblems encounteredOperation
Check that the supply pump pressure at the filter inlet is correct, carrying out the    See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECKMove on to Step 8Pressure not correctMove on to Step 9
8LOW DELIVERY 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 0.5 barMove on to Step 10Difference in pressure more than 0.5 barReplace the pipe
9ELECTRIC PUMP CHECKAll OKProblems encounteredOperation
Check that the pump power supply voltage is correct, as described in theCheck that the current uptake is correct, carrying out theSee Test 1040AA Move on to Step 101. Voltage lower than 12 V2. 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 pump    Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R 3. Replace the fuel pump    Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R and clean the fuel tank
10CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R End of diagnosis