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200416 5-5
Fuel system, XE/PE engine
DIAGNOSTICS
ΧΦ65/75/85 series
4
1
SYMPTOM: ENGINE OVERHEATED
Possible cause Remedy
Poor fuel quality Drain fuel, flush fuel system, replace the fuel filters
and fill fuel tank with fuel
SYMPTOM: FUEL CONSUMPTION TOO HIGH
Possible cause Remedy
Poor fuel quality Drain fuel, flush fuel system, replace the fuel filters
and fill fuel tank with fuel
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
Leak in fuel system Check for leaks
SYMPTOM: REDUCED MAXIMUM ENGINE SPEED
Possible cause Remedy
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 the fuel filter and clean the system
Mechanical defect or clogging in pump units Replace the pump units
Fuel lift pump delivery too low Check:
- the fuel lift pump and replace if necessary
- the gallery pressure
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