Grey smoke exhausting from a running diesel...

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Question 1 of 205eccefa2bacbc34ba4d47b83

Grey smoke exhausting from a running diesel engine can be caused by __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47b83

Grey smoke exhausting from a running diesel engine can be caused by __________.

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🔍 Key Concepts

• diesel engine combustion and exhaust colors (black, blue, white/grey) • effects of water or contamination in fuel on combustion • relationship between ignition timing and exhaust appearance

💭 Think About

• Think about what incomplete or poor combustion looks like in a diesel engine and how that appears at the exhaust. • Which of these conditions would cause fuel not to burn completely and create a hazy grey exhaust instead of a sharp black or bluish smoke? • Consider whether each option would more likely change temperature/pressure inside the cylinder or actually disrupt normal fuel burning.

✅ Before You Answer

• For each choice, ask: does this cause poor or incomplete combustion that could make a cool, misty-looking exhaust? • Recall typical color associations: black (soot/unburned fuel from overfueling), blue (burning lube oil), white/grey (unburned or partially burned fuel, often cooler). • Eliminate any options that would normally make combustion hotter and more complete, rather than cooler or interrupted.

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Question 1 of 205eccefa2bacbc34ba4d47b83

Grey smoke exhausting from a running diesel engine can be caused by __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47b83

Grey smoke exhausting from a running diesel engine can be caused by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed