(4) Governor
works
abnormally
(5)
Cylinder
blows
by
(
6)
Uneven fuel delivery
to
each
cylinder
<DUnaven fuel delivery
to
each cylin-
der in injection
pump
(3)Injectorsprays
not
well
or
the
ma-
te
be choked
@The plunger
of
the
injection pump-
worn
out
or
the
spring broken
3. Output is insufficient
or
drops suddenly
Trou.ble cause and its feature
( 1) Air filter choked
(
2)
Valve spring
or
push rod bro-
ken
( 3) Valve lash is incorrect
(4)
Compress pressure is insuffi-
cient
(5)
Fuel delivery advance angle is
incorrect
(6 ) Air trapped in
the
fuel system
or
thd
system
is choked
(7)
Fueldelivery is insufficient
(8)
Injector spray
not
well
(9)
Governotr
works
abnormally
(10)
Engine overbeated
(
11
) Too much carbon deposited
inside
the
engine
(12)
Exhaust manifold not expe-
dite
4.
Abnormal noise during. engine operation
Trouble cause and
its featre
( 1) Injecting
time
is
too
early
to
(4 ) Check and adjust
the
governor
(5)
Check
the
tightening torque:,of
the
cylind~r
head bolt and the· seal of
thecylinder
head
gasket
(
6)
<DCheck and adjust
®check
the
spray quality
of
the
in-
jector,
replace
the
mate if· necessa-
ry
@Check and replace
Remedy
1.
Clean
or
replace filter element
2. Check
.and
replace
3. Check and adjust
4. Handle according
to
1.
2
5. Check and adjust
6. Handle a ccoyding
to
(1)
,(2)
;
(3)
in
1.1
7. Check
the
plunger
of
the
injection
p~mp
and fuel outlet valve
8. Check,clean and adjust the
press,ure
9. Test and repair
the
governor
10.
Test and repair thd cooling sys -
tem
;
wipe
off
the
scale
11. Clean off the carbon deposit
12.
Find
out
the
fault and eliminate it.
Remedy
1. Adjust
the
fuel delivery advance
• 65 •
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