🔍 Key Concepts

• Diesel fuel injector location in a cylinder head • Tracing the high‑pressure fuel line from the fuel pump to the cylinder head • Difference between fuel injector, fuel pump, and valve gear/rockers in the illustration

💭 Think About

• Look for the small component at the top of the cylinder where the brown fuel oil line terminates – which label points exactly to that part? • Compare the symbols/line colors in the legend with the lines going into the head: which label marks the part that actually enters the combustion space, not just the line or the pump? • Distinguish between parts moving valve gear (rocker arms, springs, pushrods) and the separate part that only delivers fuel – which label is on that separate body?

✅ Before You Answer

• Verify which label is on the part where the brown fuel oil line ends at the cylinder head • Double‑check that the chosen label is not on the pump cam, plunger, or fuel line itself, but on the injector body that penetrates the head • Confirm that the component is positioned to spray directly into the combustion chamber, usually near the center or upper part of the cylinder head