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Home >> Pontiac >> 1983 >> 1000 4D Hatchback, 1.6 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 4-CYL Diesel >> Testing >> Nozzle Test >> Spray Pattern
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Spray Pattern

Check spray pattern by operating handle 1 stroke about every 2 seconds and observe spray pattern. The pattern should be uniform and injected at correct angle of nozzle being tested.

Fig 1: Diesel Fuel Injector Spray Pattern Do not place hands or arms under nozzle during test.
G623
CAUTION: Pressure gauge should be closed for the test or it may be damaged. Test spray is flammable. Keep vapor away from open flames.
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