In an operating diesel engine, which of the...

Question 1 / 270705eccefa3bacbc34ba4d47d74

Question 1 of 270705eccefa3bacbc34ba4d47d74

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

Question 1 of 27070

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

🔍 Key Concepts

• How a diesel engine air starting system works during normal operation • What happens if an air starting valve does not fully close after starting • Effects of hot, high‑pressure air leaking into or out of a cylinder or starting air manifold

💭 Think About

• Once the engine is running normally, what should each air starting valve be doing? Open or fully closed? • If a starting air valve leaks on a running engine, where will the heat be generated: inside the valve, in the manifold, or in the line to that cylinder? What physical signs could that create? • Which option describes a local effect at a specific cylinder, rather than a general system condition?

✅ Before You Answer

• Identify which options describe system‑wide symptoms versus symptoms at one cylinder’s valve/pipe • Consider which symptom is directly caused by hot gas flowing where it should not be once the engine is running • Eliminate any choices that would more likely be caused by a failed compressor or major system loss, not just one leaking starting valve

Question 1 of 27070

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

Noise coming from that air starting valve.

Continuous operation of the starting air compressor.

Zero air pressure in the air starting system.

Overheated starting air pipe to the cylinder head.

Question 1 / 270705eccefa3bacbc34ba4d47d74

Question 1 of 270705eccefa3bacbc34ba4d47d74

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?

Back

Question 1 of 27070

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?