🔍 Key Concepts

• how cylinder cooling water temperature relates to engine load on that cylinder • the difference between mechanical load/overload and combustion quality issues (like blow‑by or incomplete combustion) • what happens to heat production in a cylinder when its effective power output changes

💭 Think About

• If one cylinder’s outlet water temperature rises, what does that tell you about the amount of heat that cylinder is rejecting compared with the others? • Which of the listed faults would most directly increase the cylinder’s effective power output and heat generation, versus faults that tend to reduce power or efficiency? • Think about whether a problem in an adjacent cylinder would make this cylinder’s cooling water hotter, or its own operating condition would be the primary cause.

✅ Before You Answer

• Compare which option clearly refers to load on that specific cylinder rather than another cylinder • Identify which options (blow‑by, incomplete combustion) would more likely cause loss of compression or poor firing rather than extra load • Verify that the suspected cause should be the one that increases heat generation in that particular cylinder, matching the local rise in cooling water temperature