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SECTION 3 - INDUSTRIAL APPLICATION
VECTOR 8 ENGINES
Base - April 2006 Print P2D32V001E
Symptom
Visible
trouble
Possible cause Repair Notes
Attributable to mechanical malfunctioning:
No starting sign
Low pressure pump operating defect
Check the degree of the trouble and replace
the damage or inefficient parts checking with
a pressure gauge that the pressures exceed
4.5 bar
High pressure pump damaged Change the high—pressure pump
No visible sign Inefficient high pression pump
After checking and excluding any other
possibility replace the pump
Starting difficult.
Startup requires at
least 20 seconds,
large amount of
while smoke from
e
haust
fuel smell.
Injector jammed open (irreversibly).
Without any diagnosis instrument, the
injector that does not work can be found
because the relevant high pressure pipes are
not heated
CAUTION hot engine parts may cause
severe injuries
Normally with these symptoms it is natural
to abandon the attempt of starting the
engine. Because insisting the engine starts
with one cylinder less and slowly the smoke
diminishes and disappears
,
.
Check that the relevant engine-injector
cable cylinder number match
Check cable positioning and if required
connect the engine cable properly
Difficult startup and
poor performance
in all c onditions
Inefficient l ow or high pressure pump
After checking and excluding any other
possibility and checking rail pressure trend,
replace the high or low pressure pump
according to which component is damaged
Difficult startup,
poor performances
and engine runs
with one cylinder
missing
Injector with shutter or solenoid core
(mechanical part) locked open.
Without any diagnosis instrument, the
injector that does not work can be found by
feeling if there is no pulsation on the high
pressure piping
With slight blow -by that jeopardises the
mechanical operation of the injector but
does not enable the flow limiter
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