What are the symptoms of an intake pipe air leak?

[LuciaLynn]

Here are the detailed symptoms of an intake pipe air leak: 1. Weak engine operation: Since the air entering the engine through the intake pipe crack bypasses the air flow sensor, this portion of air dilutes the combustible mixture in the engine cylinders, leading to weak engine operation. 2. Increased nitrogen oxide emissions: Nitrogen oxides in vehicle exhaust are formed in high-temperature, oxygen-rich environments, and an overly lean combustible mixture further promotes their generation, increasing tailpipe pollutant emissions. 3. Difficulty starting: The engine requires a higher concentration of combustible mixture during startup, and the lean mixture caused by an intake pipe air leak may result in difficulty starting the engine.