🔍 Key Concepts

• how temperature changes when a cylinder is working too hard (overloaded) • symptoms of fuel system problems like a clogged injector nozzle • how exhaust leaks or valve problems might affect measured temperature

💭 Think About

• For each option, imagine whether it would make exhaust from that cylinder hotter, cooler, or uneven compared to the others. • Think about why engineers mount a pyrometer (exhaust temperature gauge) on multi‑cylinder diesels—what kinds of problems can it help you compare between cylinders? • Ask yourself: is exhaust temperature a very specific indicator, or a more general condition-monitoring tool that can reflect several types of faults?

✅ Before You Answer

• Compare normal vs. abnormal temperature patterns between cylinders, not just the absolute value. • Decide whether each listed problem could realistically change combustion heat and therefore exhaust gas temperature. • Before choosing, check if exhaust temperature can point to only one of these problems or can be used to help detect several different types of problems.