SAME SILVER 100.4 - Fault Diagnosis

engine won’t run when
started
engine difficult to start
or won’t restart after a
stop
clear exhaust smoke
check battery charge
starter failure
check fuel level
inefficient injection
system
check thermostarter
insufficient com-
pression
check injection pump
setting
check injectors for
proper cleanliness
charged battery
discharged battery
consult a motor vehi-
cle electrician for ha-
ving the defective
parts replaced
top up fuel level in
tank
inspect fuel filter for
cleanliness
a metal noise is heard
when engine idles
air in the fuel system
out-of-calibration
injection nozzles
clean or replace
check clearance be-
tween valves and roc-
kers
perform a new setting
make sure there is no
excessive clearance
between valves and
valve guides
clean scrupulously
battery terminals oxi-
dized
recharge battery
clean filter, replace if
necessary
out-of-adjustment
pumps, excessive ad-
vance
perform air bleeding
defective fuel pump
or pump control
calibrate
restore correct bac-
klash
check valves for effi-
cient operating condi-
tions
check piston rings
and cylinders for wear
replace worn-out
parts
clean battery con-
tacts and tighten ter-
minals
recalibrate the pumps
replace defective
parts
grind or replace val-
ves, cylinder head
gaskets and piston
rings
replace pistons and
cylinders
replace worn-out
parts
engine
diagnosing malfunctions
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