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Home >> Toyota >> 1983 >> Pickup Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Diesel >> Testing >> Injection Nozzles >> Nozzle Cleaning
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Nozzle Cleaning

  1. Disassemble nozzle holder. Wash parts in clean diesel fuel. Use a wooden stick to clean needle tip and soft brass brush to remove nozzle body deposits. DO NOT touch nozzle tip with fingers.
  2. Inspect nozzle seat and needle tip for damage or corrosion. Replace if either is found. Hold nozzle body at about 60° to vertical and insert needle.
  3. Pull needle up about one-third its length and allow to slide back down. Repeat several times, rotating needle between test. If needle does not slide down smoothly, replace nozzle.
NOTE: Injection nozzle seat gasket must be installed with concave side up when nozzle is replaced in head.
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