Fuel System (Tldi) - TOHATSU MD 70-90C2 Service Manual

Fuel System (TLDI)

1. Special Tools .............................. 4-2
2. Parts Layout .............................. 4-3
Vapor Separator & Fuel Line ............... 4-3
FFP Ass'y ....................................... 4-4
Air Rail .......................................... 4-6
Air Compressor .............................. 4-8
Oil Pump ....................................... 4-10
3. What is TLDI? .............................. 4-12
Direct Fuel Injection System ............... 4-12
ENGINE WITH CARBURETOR ......... 4-12
TLDI ............................................. 4-12
Inductive Ignition .............................. 4-13
ECU ............................................. 4-15
Fuel / Air Feed System ..................... 4-16
Oil System....................................... 4-17
Recirculation System ........................ 4-18
4. Removing Air Rail ........................ 4-19
1) Decompression of Fuel Line and Air Line ... 4-19
2) Removing Air Rail Ass'y ............... 4-19
3) Inspection of Injectors .................. 4-21
5. Assembly of Air Rail .................. 4-21
1) Installing of Injectors and Regulators ... 4-21
2) Installation of Air Rail .................. 4-24
6. Removing and installation of
Fuel System ................................. 4-25
1) Removing High Pressure Fuel Hose Ass'y... 4-25
2) Installation of Fuel Hose Ass'y ...... 4-25
3) Draining Fuel from FFP Vapor Separator ... 4-26
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4) Removing Vapor Separator ......... 4-26
5) Disassembly and Inspection of
Vapor Separator ........................ 4-27
6) Assembly of Vapor Separator ...... 4-27
7) Assembly of Vapor Separator Ass'y... 4-28
8) Removing FFP* Ass'y .................. 4-28
9) Disassembly and Inspection of FFP... 4-28
10) Assembly of FFP Ass'y ............... 4-29
11) Inspection of Fuel Pump ............... 4-30
12) Installation of FFP Ass'y to Cylinder ... 4-31
7. Removing and Installation of
Air Compressor ........................... 4-32
1) Removing Drive Belt .................. 4-32
2) Removing Air Compressor ............ 4-32
3) Inspection of Drive Belt ............... 4-32
4) Removing Driven Pulley ............... 4-33
5) Disassembly of Compressor Housing ... 4-34
6) Inspection of Reed Valve ............ 4-35
7) Inspection of Cylinder and Piston ... 4-35
8) Assembly of Compressor Housing ... 4-35
9) Installation of Crank Shaft ............ 4-36
10) Installation of Piston .................. 4-37
11) Installation of Compressor Housing Ass'y ... 4-38
12) Measurement of Fuel Pressure and
Air Pressure .............................. 4-39
13) Inspection of Oil Filter .................. 4-41
14) Inspection of Oil Tank .................. 4-41
15) Air Bleeding .............................. 4-42
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