Nissan 100NX N14 silhouetteN14

INJECTION NOZZLE - Test and Adjustment (Cont'd)

EF & EC-703prose procedure

CD-series (CD20 diesel) engine content.

Continued from EF & EC-702

Test and Adjustment (Cont'd)

LEAKAGE TEST

  1. 1
    Maintain the pressure at about 981 to 1,961 kPa (9.8 to 19.6 bar, 10 to 20 kg/cm2, 142 to 284 psi) below initial injection pressure.
  2. 2
    Check that there is no dripping from the nozzle tip or around the body.
    Two cross-section illustrations of injection nozzle tips comparing leakage conditions. Left tip labeled 'Good' shows a clean spray cone with no dripping. Right tip labeled 'Faulty' shows fuel droplets dripping from the nozzle tip and around the body.
    SEF674A
  3. 3
    If there is leakage, clean, overhaul or replace nozzle.

SPRAY PATTERN TEST

  1. 1
    Pump the tester handle one time per second.
  2. 2
    Check the spray pattern.
    Four injection nozzle illustrations showing spray patterns. The leftmost is labeled 'Good' with a fine even spray. The three on the right are bracketed and labeled 'Wrong', showing uneven, irregular, and dripping spray patterns.
    EF794
  3. 3
    If the spray pattern is not correct, clean or replace nozzle.
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