A pilot-operated, main air starting valve...

Question 1 / 205eccefa3bacbc34ba4d47d76

Question 1 of 205eccefa3bacbc34ba4d47d76

A pilot-operated, main air starting valve begins leaking in one cylinder while the engine is operating. This malfunction is indicated by __________.

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Question 1 of 20

5eccefa3bacbc34ba4d47d76

A pilot-operated, main air starting valve begins leaking in one cylinder while the engine is operating. This malfunction is indicated by __________.

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🔍 Key Concepts

• How a pilot-operated main air starting valve works during starting and what should happen to it once the engine is running • What happens to starting air if a valve leaks into a cylinder that is already firing • The difference between changes in temperature, pressure, and line condition (overheating) as indications of a leak

💭 Think About

• Think about where the starting air is physically located and routed when the engine is running normally. If one valve leaks, what part of the system is directly affected? • Consider how a continuous or intermittent flow of high‑pressure air into a hot cylinder would affect nearby components: which part would show a clear, localized symptom? • Ask yourself which of these indicators (exhaust temp change, manifold pressure change, exhaust pressure, air line overheating) would most likely be limited to one cylinder instead of the whole engine.

✅ Before You Answer

• Identify what should happen to the main air starting valve after the engine has started (open or closed?). • Decide which symptom would be local to that cylinder’s starting air circuit rather than affecting the entire exhaust or manifold system. • Confirm which option reflects a direct consequence of air leaking through the starting valve rather than a secondary engine‑performance effect.

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Question 1 of 20

A pilot-operated, main air starting valve begins leaking in one cylinder while the engine is operating. This malfunction is indicated by __________.

an increase in the exhaust temperature reading for that cylinder

an increase in the starting air manifold pressure

high exhaust pressure

an overheated air supply line to that cylinder

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Question 1 / 205eccefa3bacbc34ba4d47d76

Question 1 of 205eccefa3bacbc34ba4d47d76

A pilot-operated, main air starting valve begins leaking in one cylinder while the engine is operating. This malfunction is indicated by __________.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47d76

A pilot-operated, main air starting valve begins leaking in one cylinder while the engine is operating. This malfunction is indicated 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