User Manual

( 6) Pressure of inlet fuel is uneven
3. Insuficient fuel delivery
( 1) Fuel cock leaks
.( 2) Connector of fuel pipe leaks
(~) Plunger worn out
(6) Inspect fuel de~ivery pump and filter
3. (1) Replace parts
(2) T.ighten 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. R·eplace piston
3. Fuel inlet pipe ~eaks 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
3.
( 1) Clean or replace
(2) Clean
(3) Adjust the pressure adjusted washer
2. Add suitable thick washer
4.
( 1) Repair or peplace
(2) Clean or replace
(3 ) Tighten, replace parts
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 is too
thick
4. Too much of fuel leaka.ge
( 1) Needle valve blocked
(2) Needle valve blocked
( 3) Pressing cap is loose or distorted
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