M271 Walnut Sand removes carbon deposits in intake valves and ports
BartFerdinand 
15 At the end of March, I saw walnut sand cleaning the intake valve intake port on a kangaroo group for 458 yuan. I felt that the temperature was not very low. It was also friendly to the plastic parts on the car and was not easy to break.
It took a while for the master of the auto repair shop to remove it, and began to clean the air intake valve when the preparations were complete. After cleaning, he then cleaned the air intake passage and removed the throttle valve to wash it. Since the throttle valve was washed at a local chain store for 19.9 yuan earlier, it was not very dirty.
When I replaced the spark plug years ago, I used an endoscope to see the accumulation of carbon in the cylinder. The moderator suggested adding a bottle of Bafu G17 to every three tanks of oil. My 80-liter fuel tank basically runs to more than 100 kilometers of remaining battery life. I go to fill up the oil, so I add Bafu once to two tanks of oil. There is very little carbon in the cylinder, and the shop where the spark plug is replaced also said that the operating conditions are good.
I don’t know if it was a psychological effect, but after clearing the carbon deposits, I felt that stepping on the accelerator became smoother and smoother, and the car ran quickly.
Finally, Alipay paid 450 yuan for scanning the code.
Keep running, little Tuben![]()
It took a while for the master of the auto repair shop to remove it, and began to clean the air intake valve when the preparations were complete. After cleaning, he then cleaned the air intake passage and removed the throttle valve to wash it. Since the throttle valve was washed at a local chain store for 19.9 yuan earlier, it was not very dirty.
When I replaced the spark plug years ago, I used an endoscope to see the accumulation of carbon in the cylinder. The moderator suggested adding a bottle of Bafu G17 to every three tanks of oil. My 80-liter fuel tank basically runs to more than 100 kilometers of remaining battery life. I go to fill up the oil, so I add Bafu once to two tanks of oil. There is very little carbon in the cylinder, and the shop where the spark plug is replaced also said that the operating conditions are good.
I don’t know if it was a psychological effect, but after clearing the carbon deposits, I felt that stepping on the accelerator became smoother and smoother, and the car ran quickly.
Finally, Alipay paid 450 yuan for scanning the code.
Keep running, little Tuben
Newly removed air inlet
Fine beat of inlet
Inside the air inlet, it’s quite dark inside, like a range hood in the kitchen
intake front
The air intake position of the cylinder block looks quite dark. There are a total of 8 holes in the four cylinders. The VW system generally has one hole in each cylinder, separated from the upper and lower parts by separators.
If you take a closer picture, you can hardly see the intake valve from a layer of carbon deposit
During walnut sand cleaning, the muzzle of the air compressor is used to spray walnut sand. A larger vacuum cleaner is connected in blue to suck the sprayed walnut sand back into the vacuum cleaner
The angle is not very good
The metallic color of the intake valve can be seen after cleaning
Get closer and get the lights from the auto repair shop to replenish the light
It seems to be the air inlet cleaned by a detergent. After washing the ground, there is a lot of black dirt
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