What should you do if you hear a pounding in the engine?

What should you do if you hear a pounding in the engine?

• A. Increase throttle
• B. Shut down the engine
• C. Check oil level
• D. Ignore

Answer: (B)

Hearing a pounding in the engine signals abnormal operation that can quickly cause serious damage. That pounding is often detonation or lubrication trouble, and running the engine in that state can lead to broken bearings, cracked pistons, or other major failures. The safest, most appropriate action is to shut the engine down immediately to stop any further damage and allow a safe inspection after it cools. After shutdown, you can check for lubrication issues (like oil level and pressure) as part of diagnosing the cause. Increasing throttle would likely worsen the pounding, and ignoring it leaves the problem to escalate.

Hearing a pounding in the engine signals abnormal operation that can quickly cause serious damage. That pounding is often detonation or lubrication trouble, and running the engine in that state can lead to broken bearings, cracked pistons, or other major failures. The safest, most appropriate action is to shut the engine down immediately to stop any further damage and allow a safe inspection after it cools. After shutdown, you can check for lubrication issues (like oil level and pressure) as part of diagnosing the cause. Increasing throttle would likely worsen the pounding, and ignoring it leaves the problem to escalate.