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Test NTC-14A - Checking Engine Vacuum

NOTE: Perform TEST NTC-1A or NTC-13A before proceeding.
  1. Connect vacuum gauge to engine vacuum source. Start engine and allow to idle. Note engine vacuum reading. Turn engine off.
  2. Engine vacuum should be steady and 13-22 in. Hg depending on the altitude. If engine vacuum is not within specification, perform NTC-18A. If engine vacuum is within specification, engine vacuum is normal. Test is complete.
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