Mitsubishi S4E - Page 161

PO$.sib le caus~
Remedy
Slic: king needl e \'alve in one R epair and rep l ace nozzles if
or m ore nozz.! es necessary.
Damaged nou le tip s ea ts
Re p air an d repl ace scats if necessary .
Improper fuel 'pray rrom
Worn or brok en nozzle springs Replace nOlzle spring s.
injection n ozzl es Too Iowa n in jection press u re Adju't pressure to 1 20+
l
gkg/cm'
(1706.4 +
14
3 psi) on nozzle
tester by
inserting mi m es).
Car b on depos it ed on pac:klngs
Remove car bon.
at noule tips ,
Improper install.tion of fuel
Re· ti me prop er ly by til ting in jection
l nje<:tion ti ming too advanced
inj ection pump
pump away fr om en gine .
I nCOtreclmsta U ation of ti ming
R e . t ~e t im i ng gear tra in.
ge ar s
Improper installat i on of fae l Re·time properly by tilting mjection
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mjection pump pump t oward e ngine,
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1 njection timing too re t arded
Inco m :cl mesmog of liming Re·timt timmg g ear tr~in.
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gears
Wort'J cams , tappets or beadngs
Replaco .
in fU'!i illjection pump
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Poor grade of fuel
Use good-qu.Uty fuel.
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Water in fuel Us< good-<luality fuel.
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Lack of oil in oil pan
Add oil to prescribed leve l.
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Air in oil Sltl~ineI
Replace damaged pIpe< or packing,.
Retighl~n loose connections ir any.
Low oil press u re
Defel;liv e Otl pl.lrnp
Repai r.
Clogged f"ellinos
Cl
e.n .
Defe ct. ve:oil pressure regu lating valve
Repajr and replace if necessary
Clogged oil Cdt.,
Change el ement lind oil .
Leak in lubrieatmg sys t em Repair.
Excessiv.e oil in oil pan
Drain oil to l ower oi l le\'e l.
W orn cylinders, pistons or
Repair and replace parts Lf
piston rin~
ne~es s ary
Pumping up a r o il
Sticking piston rings.
Repair and replace damaged rings
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if neces sary,
,
Worn valve guide s
Replace valve guides.
Prolonged operation under nO
Overhaul engin e jf oil-l aden ga s es
load
fire exhausted.
C1.ogged air clea ner
Clean and replace element if
(Paper element type)
I ns:uffic i ent ~ir
Cl ogged au cle"".r
WaUl interio r.
( Oil bath type)
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Clogged intake manjfold
Check and clean.
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