What are the consequences of a blocked exhaust port?

[Jace]

Blocked exhaust pipes can affect car speed or cause engine failure. Car speed: Difficulty in accelerating, engine RPM and speed increase with difficulty; automatic transmission vehicles are forced to frequently downshift. Engine: Power decreases, exhaust emissions exceed standards; engine shaking, malfunction indicator light on, frequent stalling; exhaust pipe temperature continuously rises, reaching the ignition point of adjacent components and prone to spontaneous combustion. Exhaust pipe: Installed between the engine exhaust manifold and the muffler, it provides flexible connection for the exhaust system, reducing vibration and noise. Maintenance methods include: preventing water from entering the inside of the exhaust pipe; applying rust-proof oil inside the exhaust pipe; regularly checking the condition of the exhaust pipe.