1. The symptoms of automobile exhaust pipe blockage are: poor exhaust leads to less air intake and lower engine power; Automatic forced downshift of transmission; When the engine exhaust is not smooth, part of the exhaust gas will stay in the cylinder, diluting the mixed steam and slowing down the combustion speed. When the engine accelerates or accelerates rapidly, you will hear the sound of the exhaust pipe. The engine is ignited by fuel injection, but it won't start.
2. Exhaust pipe is a part of engine exhaust system, which mainly includes exhaust manifold, exhaust pipe and muffler. The three-stage catalytic converter, which is generally used to control the emission of engine pollutants, is also installed in the exhaust system.