DAF CF75 Series Service Manual

DIAGNOSTICS
5-4
©
200416
Fuel system, XE/PE engine
1
ΧΦ65/75/85 series
4
Mechanical defect or clogging in pump units Replace the pump units
Injector defective Check the injectors
Pressure relief valve on pump housing does not
shut off
Check the gallery pressure
Fuel lift pump delivery too low Check:
- the fuel lift pump and replace if necessary
- the gallery pressure
SYMPTOM: REDUCED POWER AT ALL ENGINE SPEEDS
Possible cause Remedy
SYMPTOM: REDUCED POWER ABOVE A CERTAIN ENGINE SPEED
Possible cause Remedy
Fuel fine filter/coarse filter partially clogged Replace fuel fine filter and clean the system
Mechanical defect or clogging in pump units Replace the pump units
Air leak in inlet system Pressure-test the air inlet system
Pressure relief valve on pump housing does not
shut off
Check the gallery pressure
Fuel lift pump delivery too low Check:
- the fuel lift pump and replace if necessary
- the gallery pressure
SYMPTOM: WHITE/BLUE SMOKE IS EMITTED
Possible cause Remedy
Poor fuel quality Drain fuel, flush fuel system, replace the fuel filters
and fill fuel tank with fuel
Air in fuel system Check for drawing in of air:
- via the suction pipe
- via the seal of the fuel lift pump
Fuel fine filter/coarse filter clogged Replace fuel fine filter and clean the system
Mechanical defect or clogging in pump units Replace the pump units
Injector defective Check the injectors
Fuel lift pump delivery too low Check:
- the fuel lift pump and replace if necessary
- the gallery pressure
SYMPTOM: BLACK SMOKE IS EMITTED
Possible cause Remedy
Injector defective Check the injectors
https://www.truck-manuals.net/

DAF CF75 Series Specifications

General

Brand	DAF
Model	CF75 Series
Category	Trucks
Language	English