What may be an indication of white smoke coming from the exhaust of an auxiliary diesel engine?
• Exhaust smoke color and engine condition (black vs blue vs white) • How fuel timing and combustion temperature affect exhaust appearance • Common symptoms of coolant or water entering the cylinder
• Think about what happens inside the cylinder if fuel does NOT burn completely or burns too late—how would that look at the exhaust? • Which of these problems is most likely to let water or coolant get into the combustion space and then turn into white vapor? • Which symptom (black, blue, or white smoke) is usually linked to lube oil burning from worn rings?
• Match smoke color to cause: black = incomplete combustion (too much fuel/too little air), blue = burning lube oil, white = unburned fuel mist or water vapor. • Ask: which option directly involves a path for water/coolant into the cylinder? • Ask: which option would more likely cause blue smoke rather than white, due to oil burning?
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