ENGINE FUEL 6C - 21
Second nozzle opening pressure confirmation
1. After pre-lift confirmation, operate the nozzle tester to
increase in-line pressure to 34.3 - 44.1 MPa (350 - 450
kg/cm
2
) so that the nozzle’s needle valve moves
through its full lift.
2. Release the nozzle tester handle so that in-line
pressure decreases.
Note:
The in-line pressure will decrease and needle
valve lift (as indicated on the dial gauge) will also
decrease a little.
3. Then, read the pressure gauge indication (second
nozzle opening pressure) the instant that the dial
gauge indicates the specified needle valve lift (usually
pre-lift liter + 0.05 mm).
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