Mitsubishi S12A2 - Fuel Injection Nozzle - Disassemble and Inspect

8-18
Chapter 8 FUEL SYSTEM
2.3 Fuel Injection Nozzle - Disassemble and Inspect
Understanding of the current engine condition before disassembling is very important to know the cause of trouble and do the
efficient work.
Depending on the maintenance work or purpose, it is desirable to inspect some of the following items before proceeding with
any job.
Fuel Injection Start Pressure - Inspect
Fuel Injection Nozzle Spray - Inspect
Fuel Injection Nozzle - Disassemble and Inspect
2
1
3
10
8
6
4
9
7
5
Carbon deposit,
nozzle hole clogging,
needle valve sticking
Shim adjustment type spec
Deformation, deterioration,
flaw
Worn contact of needle valve
Replace
Disassembling Sequence
1 Connector, gasket
2 Retaining nut
3 Nozzle tip
4 Pin
5 Spacer
6 Pin
7 Push rod
8 Nozzle spring
9 Shim
10 Nozzle holder body