Htc 1000 User Manual
NCT-1000 Common Rail Tester Quick Manual
1. GENERAL
This Tester has been developed to diagnose efficiently and accurately for diesel vehicles with common rail system.
1-1. Criteria of diagnosis using Common Rail Tester
Impossible to start engine or engine stall while driving
※ It would be recommended performing Power Balance Test by Scanners(for Bosch system) or by disconnecting injector's connecter one by one(for Delphi system),
if vehicle has problem beside the above symptoms such as engine vibration or emission of black/white smoke while engine idle.
The problem may be due to differences of the injected amount in each injector.
1-2. Notice
A CRDi system has been constructed using precision-made components.
If an extremely small foreign particle enters the system during service, it may cause sticking or clogging of injectors.
Therefore, be sure to eliminate any dust or contaminated deposits on or around the engine and fuel lines during service.
2. COMPONENTS
1
2 3
M12mm
4 5
6 7
8
M14mm
9
10
11
12
13 14
15
16
17
18
19
20
21
1. Tool Case
2. Plug (for Delphi)
3. Plug (for Bosch)
4. Flask & Holder
5. Injector return hose adapter
6. Injector return hose plug
7. Flushing Tube
8. Dust Cap
9. High pressure gauge set
10. Adapter connector (for Delphi old)
11. Adapter connector (for Delphi new)
12. Adapter connector (for Bosch)
13. Vacuum Gauge
14. Low pressure gauge
15. Gauge connection tube
16. Connection Adapter
17. Connection adapter with hose
18. Fuel Filter Plug
19. Dummy Resister
20. Block Tube
21. User's Manual
1
1. LOW PRESSURE TEST
3. DIAGNOSTIC
4-1. DIAGNOSIS PROCEDURE ACCORDING TO SYMPTOM
1) When the engine is not able to start
① Low Pressure Line Test →②Injector Back Leak Te st (Stati c Te st) →
③ High Pressure Line Test
2) When the engine is able to start
① Low Pressure Line Test →②Injector Back Leak Test (Dynamic Test) →
③ High Pressure Line Test
4-2. LOW PRESSURE FUEL LINE TEST
1) Remove fuel hose from fuel filter and connect low pressure gauge (NCT-1051) or
vacuum gauge (NCT-1050) according to engine system as shown.
* Additional parts needed: tube for gauge connection (NCT-1052),
Connection adapter with hose (NCT-1054), connection adapter (NCT-1053)
Fuel Filter Plug (NCT-1055)
2) Start the engine and keep idle approximately 5seconds, then turn of the engine.
Internal suction pump type (Bosch Type Ⅰ) (A engine / U engine)
Vacuum Gauge
ⓑ
ⓑ
ⓒ
Vacuum Gauge
ⓒ
Test Tube Assay
ⓓ Connection
Adapter
ⓓ
ⓑ
ⓓ
ⓒ
Internal suction pump type (Bosch Type)
CASE VACUUM JUDGMENT
1 10~20 cmHg System normal (good condition)
2 20~60 cmHg
3 0~10 cmHg
Filter or fuel line clogging (pump in good
condition)
Air leak in to the system or Suction pump
damage
2
1. LOW PRESSURE TEST
Electric pump type (Bosch Type II)
ⓐ
Low Pressure Gauge
ⓒ
ⓐ
ⓒ
Test Tube Assay
ⓓ
Connection Adapter
ⓔ
Connection Adapter with Hose
ⓕ
Hose Clamp
ⓓ
ⓔ
ⓕ
Fuel pump
(Electric)
Internal suction pump type (Delphi)
Pressure Gauge
ⓑ
Electric pump type (BOSCH Type Ⅱ)
EURO-Ⅲmodel
CA
PRESSURE (bar) JUDGMENT
SE
1 1.5~3.5 kg/
2 0 ~1.5 kg/
3 no pressure Abnormal function of fuel pump
EURO-Ⅳmodel
CA
PRESSURE (bar) JUDGMENT
SE
1 2.5 ~ 5 kg/
2 0.5~2.0 kg/
3 no pressure Abnormal function of fuel pump
㎠
㎠
㎠
㎠
System normal
Fuel Filter (or fuel line / strainer) clogging
System normal
Filter or fuel line clogging (pump in good
condition)
ⓒ
Internal suction pump type ( Delphi)
ⓖ
ⓓ
ⓓ
ⓖ
CASE VACUUM JUDGMENT
1 10~20 cmHg System normal (good condition)
2 20~60 cmHg
3 0~10 cmHg
Filter or fuel line clogging (pump in good
condition)
Air leak in to the system or Suction pump
damage
3
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