If lost motion is present in an individual...

Question 1 / 270705eccefa2bacbc34ba4d4788e

Question 1 of 270705eccefa2bacbc34ba4d4788e

If lost motion is present in an individual fuel injection pump, which of the following problems will occur?

Question 1 of 27070

If lost motion is present in an individual fuel injection pump, which of the following problems will occur?

🔍 Key Concepts

• Lost motion in a fuel injection pump linkage or cam/follower system • Relationship between camshaft rotation and the start of fuel injection • How timing changes affect when fuel is injected into the cylinder

💭 Think About

• Imagine the cam lobe is in the correct place, but some of its movement is taken up by slack or wear before the plunger actually starts to move—what does that do to the start of injection? • Does lost motion make the plunger move more, less, or just later/earlier compared to normal? • Think about how engine timing works: if the pump plunger starts moving later in the cam cycle, what happens to injection timing?

✅ Before You Answer

• Be clear on the difference between amount of fuel delivered and timing of fuel delivery • Picture the mechanical linkage: cam → follower → plunger; where would slack or wear show up, and how would that affect when the plunger starts to rise? • Verify whether lost motion delays or advances the start of effective plunger stroke that actually pressurizes fuel for injection

Question 1 of 27070

If lost motion is present in an individual fuel injection pump, which of the following problems will occur?

Fuel injection will be increased.

Fuel injection will remain unchanged.

Fuel injection will occur earlier.

Fuel injection will occur later.

Question 1 / 270705eccefa2bacbc34ba4d4788e

Question 1 of 270705eccefa2bacbc34ba4d4788e

If lost motion is present in an individual fuel injection pump, which of the following problems will occur?

Back

Question 1 of 27070

If lost motion is present in an individual fuel injection pump, which of the following problems will occur?