What is the appropriate engine RPM for car starting?
2 Answers
When starting a car, the engine speed is generally appropriate at 700-800 RPM. Higher RPM leads to increased fuel consumption, and as long as there is no shaking, design engineers prefer to keep it as low as possible for fuel efficiency. Below is an introduction to related engine knowledge: Conditions causing automatic idle speed increase: Cold start, low water temperature, battery discharge, turning on air conditioning for cooling. Hazards of unstable idle speed: Excessively high car idle speed requires checking if the intake manifold is loose or leaking, which can significantly increase fuel costs and also promote engine carbon buildup. Excessively low car idle speed poses a safety hazard of stalling while driving.
Every time I start driving, I make it a habit to keep the engine speed around 1500 RPM, which ensures a smooth and safe start. As a driver, I believe that with a manual transmission car, it's important to pay attention to the clutch coordination. If the RPM is too low, the engine may stall, and if it's too high, the engine will roar and consume more fuel. Especially when starting on a slope, the RPM needs to be slightly higher, around 2000 RPM, to prevent the car from rolling back. Don't overlook the impact of weather either; during cold winter starts, the RPM might be a bit higher. In short, with more practice, you'll get the hang of it. Beginners should start by keeping a steady 1500 RPM and avoid stomping on the accelerator, which not only protects the engine but also saves fuel.
