Iveco Daily. Manual — part 55
High-pressure pump efficient.
NO
YES
Fuel filters efficient.
Change, proceeding as described in the “Operation
and Maintenance” booklet.
High and low pressure, supply circuit efficient.
Check system coupling seal.
Thermostat efficient.
Check the priming pump and clean the drawing
element of any debris.
Fuel in tank.
Change.
Drawing element of fuel in tank efficient.
Check the fuel level.
Engine Test with Modus — IWT — IT2000, replace if
necessary.
NO
YES
NO
YES
NO
YES
NO
YES
NO
3
NO
YES
Injectors efficient and flow limiters (if applicable) work
correctly
Engine Test with Modus — IWT — IT2000, replace if
necessary.
Check O-ring seal.
(continues)
THE ENGINE LACKS POWER
ENGINES 8140.43R/B/S/N
202
D
AILY
Base - May 2004
NO
YES
NO
YES
NO
NO
YES
NO
YES
Rail overpressure valves efficient.
Disconnect the fuel return pipe from the rail and check
for any blow-by.
Compression ratio correct.
Engine Test with Modus — IWT — IT2000.
Turbocharger efficient (integrity of blades, bearings,
actuators).
Check it works properly.
Repair or replace the assembly.
NO
Waste-gate efficient.
Check it works properly.
Change.
EGR pneumatic valve efficient.
Check it works properly.
Change.
Throttle potentiometer efficient.
Check wiring and tightening of pedal base.
Replace if necessary.
YES
Valve clearance efficient.
Check - adjust.
NO
YES
ENGINES 8140.43R/B/S/N
203
D
AILY
Base - May 2004
NO
YES
NO
YES
4
THE ENGINE PRODUCES BLACK
OR DARK GREY SMOKE
NO
Air filter efficient.
Change.
Injectors efficient.
Engine Test with Modus — IWT — IT2000.
Check O-ring seal.
Cylinder compression correct.
Engine Test with Modus — IWT — IT2000.
NO
YES
NO
YES
NO
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.
Turbocharger efficient.
Check it works properly.
Repair or replace.
Waste-gate efficient.
Check it works properly.
Change.
YES
YES
NO
EGR pneumatic valve efficient.
Check it works properly.
Change.
ENGINES 8140.43R/B/S/N
204
D
AILY
Base - May 2004
NO
YES
NO
5
THE ENGINE PRODUCES GREY
SMOKE, TENDING TO WHITE
Injectors efficient.
Engine Test with Modus — IWT IT 2000.
Check O-ring seal.
Coolant level correct.
Probable passage of coolant into the combustion
chambers. Change the cylinder head gasket or overhaul
the engine.
6
THE ENGINE PRODUCES BLUE
SMOKE
Oil in the cylinders.
Too much oil consumption.
Turbine oil blow-by.
Blow-by from valve guide.
YES
7
THE ENGINE PRODUCES WHITE OR
BLACK SMOKE
Timing sensor on flywheel efficient.
Check the sensor is correctly positioned.
Position it correctly.
YES
Engine flywheel timing correct.
Check the timing is correct; do the timing if necessary.
YES
YES
ENGINES 8140.43R/B/S/N
205
D
AILY
Base - May 2004
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