(
6)
Pressure
of
inlet fuel is uneven
3. Insuficient fuel delivery
( 1)
Fuel
cock
leaks
(2)
Connector
of
fuel pipe leaks
(3)
Plunger
worn
out
(6) Inspect fuel delivery purrp and filter
3.
(1)
Replace parts
( 2) Tighten
the
connector
(3)
Replace
parts
10. Insufficient fuel supply
of
the
fuel delivery
pump
1.
Non - return spring broken
or
seal
of
1.
Replace spring
or
repair no - return
the
valve seat is
not
good valve
2. Piston
worn
out
2. Replace piston
3.
Fuel inlet pipe leaks
or
choked
3.
Check the seal
of
the
pipes, tighten
the
screw,
dredge
the
pipes
(4) Tighten connctor or replace parts
(5)
Inspect fuel supply of
the
injection
2. Add suitable
thick
washer
4.
( 1 )
Repair
or
peplace
(2)
Clean or replace
(3
) Tighten,replace parts
3.
( 1) Clean or replace
(2)
Clean
is
too (3) Adjust the pressure adjusted
washer
Remedy
1.
( 1)
Blow
off
air
(2)
Repaing
or
realace
needle (
3) Replace
11. Injector malfunction
Trouble cause and its feature
1. Spray less
or
no spray
( 1) Air trapped in
the
fuel passage
( 2) Neeldle is blocked
(
3)
Loose combination
of
the
valve
( 4)
Heavy leakage
in
fuel
system
(5)
Abnormal fuel supply
of
the
injection
pump
2. Injecting pressure is
low
Pressure adjustion washer worn out
3.
Too
high
injecting pressure
( 1) Needle valve blocked
(2)
Injecting hole choked
(
3)
Pressure adjusting
washer
thick
4.
Too
much
of
fuel leakage
( 1 )
Needle
valve
blocked
( 2) Needle valve
~Iocked
(3
) Pressing cap is loose or distorted
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