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PO$.sible
caus~
Remedy
Slic: king
needle
\'alve
in
one
Repair and replace nozzles if
or
more
nozz.!es
necessary.
Damaged
noule tip
sea ts
Repair and
replace
scats
if
necessary
.
Imprope
r
fuel 'pray
rrom
Worn
or
broken nozzle
springs
Replace nOlzle
springs.
injection
nozzles
Too
Iowan injection
pressure
Adju't
pressure
to 120+ l
gkg/cm'
(1706.4
+ 14
3
psi)
on nozz le
tester by inserting
mimes).
Carbon
deposited
on
pac:klngs
Remove
carbon.
at noule
tips
,
Improper
install.tion of
fuel
Re·time
properly
by
tilting
injection
lnje<:tion
ti
ming too advanced
injection pump
pump away from
engine.
InCOtreclmstaU
ation
of
timing
Re
.
t
~e
tim
ing gear
train.
gears
Improper installat ion of fae
l
Re·time properly
by
tilting mjection
I
mjection
pump
pump
toward engine,
I
1njection timing too retarded
Incom:cl
mesmog of
liming
Re·timt timmg gear
tr~in.
I
gears
Wort'J cams
,
tappets
or
beadngs
Replaco
.
in
fU'!i
illjection pump
I
Poor grade
of fuel
Use
good-qu.Uty
fuel.
I
Water
in
fuel
Us<
good-<luality
fuel.
I
Lack of
oil
in oil
pan
Add
oil
to prescribed
level.
I
Air in
oil
Sltl~ineI
Replace
damaged
pIpe<
or
packing,.
Retighl~n
loose connections
ir
any.
Low
oil pressure
Defel;live
Otl
pl.lrnp
Repai
r.
Clogged
f"ellinos
Cle.n.
Defect.ve:oil pressure regu lating valve
Repajr and
replace
if
necessary
Clogged oil Cdt.,
Change
element
lind
oil
.
Leak
in
lubrieatmg system
Repair
.
Excessiv.e
oil in oil pan
Drain
oil
to lower
oil
le\'e
l.
W
orn cylinders, pistons or
Repair and replace
parts
Lf
piston
rin~
ne~es
sary
Pumping up
a
r oil
Sticking piston rings.
Repair
and replace
damaged rings
I
if
necessary,
,
Worn valve
guides
Replace
valve
guides.
Prolonged operation under nO
Overhaul
engine
jf
oil-laden
ga
ses
load
fire exhausted
.
C1.ogged
air
cleaner
Clean and replace
element
if
(Paper element
type)
Ins:uffic ient
~ir
Clogged au cle"".r
WaUl
interior.
(Oil bath type)
I
Clogged intake
manjfold
Check
and
clean.
-
.
- -
--
-
155
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