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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
FUEL INJECTION TIMING
ENGLISH
MAINTENANCE
MAINTENANCE
49 FUEL INJECTION
TIMING
49.1 Preparation
1. Close the fuel filter valve.
2. Disconnect the No. 1 fuel injection pipe from the
cylinder head and injection pump.
3. Remove No. 1 delivery valve holder from the
injection pump. Remove the delivery valve and
spring from the holder. Restore the delivery valve
holder only to the injection pump.
4. Connect the fuel injection pipe to the injection
pump.
5. Hold the speed control lever in the low speed
position.
49.2 Inspection
49.2.1 Fuel flow method
1. Open the fuel filter valve. Turn the starter switch
key to ON position.
2. Slowly turn the crankshaft clockwise, looking at the
free end of the injection pipe. The instant fuel
stops coming out is the fuel injection timing.
Figure 256 Removing delivery valve and spring
Figure 257 Fuel coming from injection pipe
NOTE
Fuel will come from the injection pipe with high
pressure when the starter switch key is turned to ON
position if the engine is equipped with an electric fuel
pump. Direct fuel flow into the container.
Figure 258 Fuel stops coming from injection pipe
NOTE
Turn the crankshaft in reverse direction just a little
and do Step (2) again to verify the injection timing.
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