6C-8 ENGINE FUEL AND EMISSION CONTROL SYSTEM
ON-VEHICLE SERVICE
FUEL FILTER
CAUTION:
2
1
• Disconnect the battery before carrying out any
intervention of the fuel filter.
• Place the vehicle in a ventilated work place, away
from heat and flames.
• Before intervining on the fuel system, remenber
«CLEANING TIPS AND CAUTIONS DURING REPAIR»
(see 6C-7).
NOTE:
• Prepare suitable recipients or utensils to dump or
soak up the fuel which spills during removal.
• Make sure that the fuel tank has enough fuel.
Bleeding air of fuel system
(mechanical injection engine)(mechanical injection engine)
(mechanical injection engine)(mechanical injection engine)
(mechanical injection engine)
NOTE:
This operation is carried out every time the filter element
is replaced and when air has got into the system.
1) Open the bleeder (2) and pump using push-button (1) several
times until fuel comes out free from air. In this situation,
close the bleeder (2).
NOTE:
If the engine has stopped due to lack of fuel, loosen the
outlets from the injection pipes and turn the starter motor
until the entire system is drained. Tighten the pipe outlets
after the drainage.
(common rail engines)(common rail engines)
(common rail engines)(common rail engines)
(common rail engines)
NOTE:
In Common Rail engines, the system is self-draining - only
in extreme cases, when the fuel tank has run completely
dry, the drainage can be helped by loosening the bleeder
plug (6).
WARNING:
It is dangerous to loosen the high pressure pipe outlets
when the engine is running or there is still pressure in
the accumulator (Rail).
FUEL FILTER (MECHANICAL INJECTION ENGINE)
FUEL FILTER (COMMON RAIL ENGINE)
6
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