Snoring from the exhaust pipe

When the exhaust pipe snores, when the cold car starts, the fuel atomization is poor, and the discharged flue gas contains a certain concentration of mixed gas, which increases the exhaust volume and causes abnormal noise. With the end of the hot car, the chug sound gradually disappeared. This phenomenon exists in both middle and low gears.

Snoring in the exhaust pipe may be caused by the following reasons:

1, tubing, tubing blockage, poor patency, rail pressure, etc. Will lead to. The electric fuel pump is abnormal or the fuel filter is blocked or blocked for various reasons; Abnormal fuel injector: it can be its own quality failure, or it can be a variety of defects caused by foreign objects, such as blockage, poor sealing, aging of rubber ring, etc.

2, air intake or idle speed control, stepper motor, throttle body dirty or air leakage. Sensors such as air pressure, temperature and throttle position are abnormal, and the data is incorrect. Too lean: The mixture is too lean or the fuel is too lean. Check the air intake part, oil circuit, etc.

3. Ignition wire, presbyopia or cracking of ignition wire leads to leakage and insufficient ignition strength. Or installation problems lead to poor contact.

The dripping phenomenon of exhaust pipe shows that the engine works normally and the atomization effect of the engine is good after full combustion. If the exhaust from the exhaust pipe is foggy, the engine is in good condition. The whirring sound may be a distributor fault or an internal fault of the distributor, such as the centrifugal block being stuck or other faults. The ignition time is not appropriate in advance, resulting in too late ignition, exhaust pipe? Shoot? .

(Photo/Text/Photo: Tang Yanyan) @20 19