How much carbon is deposited on Toyota's 4s accelerator?

The shop that cleans the car accelerator is usually 150 yuan. Do it yourself and find the repair shop within 50 minutes. 100- 150 yuan. The charge at 4 o'clock is more expensive, around 200 yuan. Carbon deposition includes two concepts: 1. One concept is engine carbon deposition: combustion substances produced by unsaturated olefins and colloids in fuel at high temperature during engine operation. 2. The second concept is that carbon deposition should be avoided as much as possible in EDM, especially in precision die machining.