Iveco Daily. Manual — part 54
NO
YES
NO
NO
YES
NO
YES
Pre-post heating system efficient.
Diagnosis with Modus — IT2000 — IWT.
High-pressure pump efficient.
Engine Test with Modus IWT — IT 2000.
Injector efficient.
Engine Test with Modus IWT — IT 2000.
Check O-ring seal.
Compression ratio correct.
Overhaul the engine or limit repairs to the parts
concerned (valves, rings, etc.).
(continues)
NO
YES
NO
NO
YES
NO
YES
Motor pump efficient.
Pump not supplied.
Check wiring and fuse.
Buzzing is a sign it is working.
Motor pump efficient.
Insert a pressure gauge between the motor pump and
filter, with the panel on the pressure must be no less
than 2 bars, otherwise change the motor pump.
Low-pressure supply pipes efficient.
Visual analysis to exclude leaks and constrictions.
Fuel return pipes to tank efficient
Visual analysis to exclude constrictions.
YES
ENGINES 8140.43R/B/S/N
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NO
YES
NO
NO
YES
NO
YES
Fuel filter efficient.
Insert a pressure gauge between the filter and the
high-pressure pump, with the panel on the pressure
must be greater than 1.8 bars, otherwise change the
filtering cartridge and repeat.
Fuel filter clogging sensor efficient.
Insert a pressure gauge between the filter and the
high-pressure pump, with the panel on the pressure
must be greater than 1.8 bars, otherwise change the
filtering cartridge and repeat.
Starter heater solenoid valve efficient.
Plug the fuel delivery pipe and try starting again. If the
engine starts, check the supply and replace the solenoid
valve if necessary.
Fuel return pipes to the tank upstream of the outlet
assembly or outlet assembly efficient.
Insert a pressure gauge upstream of the starter heater
valve, with the panel on the pressure must be greater
than 0.4 bars, otherwise search for leaks and tighten the
connections properly.
(continues)
NO
YES
Fuel return pipes to the tank upstream of the
recirculation outlet assembly efficient.
Insert a pressure gauge upstream of the starter heater,
with the panel on the pressure must be less than 0.9 bars,
otherwise remove and clean the recirculation nozzle.
NO
YES
By-pass valve downstream of fuel filter efficient.
Insert a pressure gauge between the filter and the
high-pressure pump, with the panel on the pressure
must be greater than 1.8 bars, otherwise change the
filter base and repeat.
NO
YES
Rail overpressure valve efficient.
If the pressure gauge inserted upstream of the
high-pressure pump indicates at least 1.8 bars and the
pressure gauge upstream of the starter heater valve at
most 0.9 bars, check the parameters with IWT-IT2000.
ENGINES 8140.43R/B/S/N
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NO
YES
NO
NO
YES
NO
YES
Rail overpressure valve efficient.
If when cranking the rail pressure is less than 150 bars,
remove the recirculation assembly, plug the ring
connecting to the rail and inspect the seal of the
overpressure valve.
If there is any blow-by, change the valve.
Repeat the test with IWT-IT2000.
Electro-injector efficient.
If after the above test, the rail pressure is still less than
150 bars, change the injector.
High-pressure pump and shut-off valve efficient.
If after the above tests, the rail pressure is still less than
150 bars, change the pump-regulator assembly.
Engine flywheel with correct timing.
Check the timing is correct; do the timing if necessary.
(continues)
NO
YES
Timing sensor on flywheel efficient.
Check the sensor is in the right position. Position it
correctly.
NO
YES
EDC control unit efficient.
Change the control unit.
2
NO
THE ENGINE OVERHEATS
Correct coolant level.
Check for leaks and restore the level.
ENGINES 8140.43R/B/S/N
200
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Base - May 2004
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Water pump efficient.
Overhaul or replace the assembly.
Thermostat efficient.
Replace.
Wash thoroughly, check whether any liquid leaks;
replace the part if necessary.
Radiator efficient.
Air filter and circuit piping efficient.
Clean or change the defective parts.
Cylinder head gasket efficient.
Change.
Electric fan efficient.
Check the wiring, coolant temperature sensor and
electromagnetic coupling; replace if necessary.
NO
Water pump drive belts and fan efficient.
Change the tensioner.
YES
ENGINES 8140.43R/B/S/N
201
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Base - May 2004
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