1A
Table 5: Rough Idle Speed (Pumping)
Troubleshooting
Step Action YES NO
1
Check that the fuel tank is correctly filled and that the fuel type is suitable.
Is the fuel type suitable and the tank correctly filled?
Go to Step 2.
Refill the fuel tank correctly.
2
Check the following:
Check the low pressure circuit referring to Test 1: Low Pressure Circuit Check:K9K .
Check the engine parameters referring to Test 4: Parameter Check:K9K .
Is it in good condition?
Go to Step 3.
Carry out the required repairs.
3
Is the engine wiring harness cut off or jammed?
Carry out the required repairs.
Go to Step 4.
4
Check for leaks in the high pressure circuit.
Is it in good condition?
Go to Step 5.
Carry out the required repairs.
5
Check that the glow plugs are working properly.
Is the glow plug resistance over 1 Ω?
Replace the glow plug.
Go to Step 6.
6
Are the compressions correct?
Go to Step 7.
Carry out the required repairs.
7
Check the following:
Check the high pressure pump referring to Test 7: High Pressure Pump Check:K9K .
Is it in good condition?
End of fault finding.
Carry out the required repairs.