aircraft systemsFAA-published question bank (Private Pilot, 2008)
If the engine oil temperature and cylinder head temperature gauges have exceeded their normal operating range, the pilot may have been operating with
A
the mixture set too rich.
B
higher-than-normal oil pressure.
C
too much power and with the mixture set too lean.✓ Correct Answer
Explanation
PHAK Chapter 7 explains that excessive oil and cylinder head temperatures can result from too much power, too lean a mixture, insufficient cooling airflow or low oil. A rich mixture cools the cylinders, and high oil pressure is not a cause of overheating.
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