DAF CF65 Series Service Manual page 49

4
series
Possible cause
Poor fuel quality
Possible cause
Poor fuel quality
Fuel fine filter/coarse filter clogged
Mechanical defect or clogging in pump units
Injector defective
Leak in fuel system
SYMPTOM: REDUCED MAXIMUM ENGINE SPEED
Possible cause
Air in fuel system
Fuel fine filter/coarse filter clogged
Mechanical defect or clogging in pump units
Fuel lift pump delivery too low
©
200416
SYMPTOM: ENGINE OVERHEATED
Drain fuel, flush fuel system, replace the fuel filters
and fill fuel tank with fuel
SYMPTOM: FUEL CONSUMPTION TOO HIGH
Drain fuel, flush fuel system, replace the fuel filters
and fill fuel tank with fuel
Replace fuel fine filter and clean the system
Replace the pump units
Check the injectors
Check for leaks
Check for drawing in of air:
-
-
Replace the fuel filter and clean the system
Replace the pump units
Check:
-
-
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DIAGNOSTICS
Fuel system, XE/PE engine
Remedy
Remedy
Remedy
via the suction pipe
via the seal of the fuel lift pump
the fuel lift pump and replace if necessary
the gallery pressure
1
5-5