3022584 - D10 ENGINE IDLE IRREGULAR
-| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
Check:
| Continue to Step 1 | Fault in air intake circuit | Repair the air intake circuit | |
| Air filter blocked | Replace the filter element Op. 1048A14 | |||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect
the diagnostic equipment (Examiner or other instruments) to the
diagnostic socket Check:
| Continue to Step 2 | An error is detected in the control unit | Continue following the instructions for the diagnostic equipment | |
| Unreliable parameters | Continue following the instructions for the diagnostic equipment | |||
| Lack of dialogue with the control unit | Restore the connection between engine management control unit and diagnostic connector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT | |||
| Solenoid not working | Check the continuity of the wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT and if necessary replace the solenoid Op. 1080C74 | |||
| 2 | CHECK ON FUEL FILTER | All OK | Problems met | Operation |
| Check the operation of the fuel filter | Continue to Step 3 | Presence of water, petrol, paraffin or dirt detected | Clean the tank and pipes and replace the diesel filter cartridge Op. 1044B20 | |
| 3 | CHECK ON CYLINDER COMPRESSION | All OK | Problems met | Operation |
| Carry out the cylinder compression test | Continue to Step 5 | Cylinder compression insufficient | Continue to Step 4 | |
| 4 | CHECKING CAUSE OF INSUFFICIENT COMPRESSION | All OK | Problems met | Operation |
| Carry out R.R. on head to check the valve seal and check the condition of the cylinders/piston rings | Continue to Step 5 | Insufficient valve seal | Overhaul the cylinder head Op. 1016E10 | |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists: control unit faulty | Replace engine management control unit Op. 1060G80 | |