What is the recommended starting RPM for a Civic to avoid engine damage?

[VanHazel]

Generally, the RPM should be between 1,000 and 3,500. Around 3,000 RPM, the engine delivers the maximum torque, after which it becomes inversely proportional to the RPM. Therefore, driving at around 3,000 RPM is usually sufficient. The higher the engine RPM, the more work it performs per unit of time, resulting in greater power. However, higher RPMs also speed up the entire cycle, causing fuel to be expelled before it has enough time to fully combust. There are many reasons why a car may struggle to start with high RPM. Excessive carbon buildup: Too much carbon buildup in the throttle body and intake pipes can restrict airflow, preventing gasoline from burning completely. This naturally reduces power, causing the RPM to surge continuously, making it difficult to start the car, and to some extent, increasing fuel consumption. Clogged fuel injectors: This can result in poor fuel atomization or even a complete lack of fuel injection, leading to a misfire and reducing the engine's power output.