How to judge the muffler blockage of heavy truck man engine

Judging whether car muffler is blocked according to the following symptoms:

1, car acceleration is weak: it is difficult to improve engine speed and speed. This is because the poor exhaust leads to the reduction of intake air and engine power.

2. Automatic transmission vehicles are forced to downshift frequently: engine power is reduced due to exhaust blockage. In order to make the car have more power output, the driver must step on the accelerator deeply and let the throttle fully open. Therefore, the ECU controls the automatic transmission to be forced to downshift according to the opening state of the throttle.

3. There is backfire when the engine is refueled: when the engine is not exhausted smoothly, some exhaust gas will stay in the cylinder, diluting the mixed steam and slowing down the combustion speed. When the intake valve is opened, the mixed steam is still burning. Therefore, the mixture after combustion will flow back into the intake pipe through the open intake valve, causing backfire.