Leakage Test

Open tester shut off valve to pressure gauge an additional 1/2 to 1 1/2 turns. Blow dry nozzle tip. Connect a short piece of clear plastic tubing to each fuel return fitting on nozzle.
Slowly depress tester lever until pressure gauge reads 1400 psi (98 kg/cm² ). Maintain pressure for 10 seconds and observe nozzle tip.
Replace nozzle assembly if drop of test fluid drops from tip within 10 seconds. A drop may form but not drop off within the specified time period. See Fig 1. Release tester pressure.

Fig 1: Nozzle Leakage Test A drop of test fluid may form but not drop off within 10 seconds.