If you increase the clearance between a...

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Question 1 of 205eccefa1bacbc34ba4d476cf

If you increase the clearance between a valve stem and rocker arm, which of the listed conditions will occur?

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5eccefa1bacbc34ba4d476cf

If you increase the clearance between a valve stem and rocker arm, which of the listed conditions will occur?

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🔍 Key Concepts

• Relationship between valve lash (clearance) and valve timing in a diesel engine • How increasing clearance affects when the rocker arm actually begins to move the valve stem • Difference between valve timing (open/close events) and fuel injection quantity

💭 Think About

• Visualize the rocker arm and valve stem: if the gap between them is larger, does the rocker start moving the valve earlier or later in the cam’s rotation? • Once the cam lobe has passed its peak, with extra clearance, does the valve continue to follow the lobe as long, or does it stop earlier? • Does changing the mechanical clearance between the rocker and valve directly change injection pump stroke (fuel quantity), or mainly the timing of valve motion?

✅ Before You Answer

• Focus first on how increased lash = more lost motion before the valve starts to move. • Decide whether that lost motion affects the opening moment, the closing moment, or both – and in which direction (earlier vs later). • Confirm whether fuel quantity is controlled primarily by the injection pump settings or by the valve/rocker clearance.

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Question 1 of 205eccefa1bacbc34ba4d476cf

If you increase the clearance between a valve stem and rocker arm, which of the listed conditions will occur?

Back

Question 1 of 20

5eccefa1bacbc34ba4d476cf

If you increase the clearance between a valve stem and rocker arm, which of the listed conditions will occur?

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