What Causes a Car to Surge?

[JoyRose]

Car surging is most likely caused by issues with the engine's vacuum tube or idle speed motor. Below are some relevant introductions regarding car engine maintenance: 1. Maintain good crankcase ventilation: Pollutants in the air can deposit around the PCV valve, potentially causing it to clog. If the PCV valve is blocked, contaminated gases can flow backward into the air filter, polluting the filter element and reducing its filtering capacity. Inhaling excessively dirty air-fuel mixture further pollutes the crankcase, leading to increased fuel consumption, accelerated engine wear, and even engine damage. Therefore, it is necessary to regularly maintain the PCV and clean the pollutants around the PCV valve. 2. Regularly change the engine oil and oil filter: As the oil passes through the fine pores of the oil filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged, the oil cannot flow smoothly through the filter element, which may cause the filter element to burst or open the safety valve, allowing oil to bypass through the bypass valve and carry contaminants back to the lubrication areas. This accelerates engine wear and increases internal contamination.