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Atlas Copco QAX 12-20-30 Dd — Blue or white exhaust smoke

For the Atlas Copco QAX 12-20-30 Dd.

Applies to: Atlas Copco QAX 12-20-30 Dd

Procedure

  1. Wrong grade of lubricating oil.
  2. Fault in cold start system.
  3. Engine temperature is too low.

Source: manual:QAX 12-20-30 Inst 2006 .pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.