How to judge whether the waste gas valve is damaged?

Method for judging whether the waste gas valve is damaged 1:

You can directly unscrew the clamp on the throttle door, take off the trachea, open the throttle with a good hand, then put the dipstick in, explore it to the end, and then take it out for inspection. If there is only some putty on the dipstick, there is no problem, but there is oil to prove that the waste gas valve is broken.

/iknow-pic.cdn.bcebos.com/55e736d12fe2eb9381695a7e0db628535e5dd6f2c "target =" _ blank "title =" "class =" ikqb _ img _ alink ". /iknow-pic . cdn . BCE Bos . com/55e 736d 12 F2 EB 938 1695 a 7 E0 db 628535 e 5d D6 F2 c？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ 55e 736d 12f 2 EB 938 1695 a 7 E0 db 628535 e 5d D6 F2 c "/>；

Method 2 for judging whether the waste gas valve is damaged:

Start the engine, let the engine run at idle speed, remove the vacuum hose on the exhaust gas recirculation valve and connect the manual vacuum pump. Then air is pumped in to directly add vacuum to the diaphragm chamber of exhaust gas recirculation. Under normal circumstances, the engine will have unstable idle speed or flameout, indicating that the exhaust valve is also normal. If not, it proves that the exhaust valve is broken.

/iknow-pic . cdn . BCE Bos . com/63 d0 f 7039 18 fa 0 EC 3 1b 9 1f 289759 ee 3d 6 DDB 1 a " target = " _ blank " title = " " class = " ikqb _ img _ alink " >/iknow-pic . cdn . BCE Bos . com/63d 0 f 7039 18 fa 0 EC 3 1b 9 1f 289759 ee 3d 6 DDB 1a？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ 63d 0 f 7039 18 fa 0 EC 3 1b 9 1f 9 1f 289759 ee 3d 6 DDB 65438

Extended data:

Influence of waste gas valve damage:

1. After the waste gas valve is damaged, it is impossible to control the waste gas circulation, but too much waste gas participates in the recycling, which will affect the ignition and performance of the mixture, thus affecting the dynamic performance of the engine, especially when the engine is idling, low speed, light load and cold engine, the recycled waste gas will obviously affect the engine performance, leading to engine alarm;

2. The damaged waste gas valve will cause the car to burn engine oil, and the tail gas is blue smoke. The reason is that the waste gas valve is also equivalent to an oil-gas separator, which only absorbs waste gas and does not absorb oil during normal operation. The waste gas valve is damaged, and the oil-gas separation function is lost. At the same time, the engine oil is inhaled, which makes the engine oil enter the air inlet and combustion chamber, resulting in oil burning, and the tail gas is blue smoke.