What immediate action should be taken when the engine indicates a high Exhaust Gas Temperature during startup?

When an engine indicates a high Exhaust Gas Temperature (EGT) during startup, the prudent course of action is to shut down the engine. High EGT readings can indicate an overheating condition that may point to underlying issues such as fuel-rich conditions, poor combustion, or mechanical malfunctions. Allowing the engine to continue running under these circumstances can lead to severe damage and possibly catastrophic failure.

In the context of engine operation, maintaining temperature within specified limits is crucial for safe and reliable performance. Therefore, if EGT readings rise beyond acceptable thresholds shortly after startup, it is essential to stop the engine to prevent potential harm. Doing so allows for inspection, diagnosis, and necessary corrective measures before attempting to restart.

Taking action such as increasing fuel flow, engaging the starter, or adjusting the ignition timing would not be appropriate responses to a high EGT situation. These actions could exacerbate the problem, potentially leading to more significant damage or unsafe operating conditions.