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Home › Nissan-Datsun › 1990 › 300ZX 2+2 › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/O Codes › Backfire › Intake

Engine Controls - Tests W/O Codes: Backfire: Intake

  1. Check spark plug for improper gap or fouling.
  2. Ensure there are no vacuum leaks into intake system.
  3. Check for intake valve deposits.
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