Will the toothbrush damage the coating of the throttle valve?

No, many people will brush the accelerator with a toothbrush. Just pay attention.

Too much carbon deposition on the throttle will lead to weak acceleration, difficult ignition and increased fuel consumption, so the throttle can still be cleaned after carbon deposition. When cleaning, please use a special cleaner. Don't forcibly open the throttle when cleaning. Many car owners like to clean the throttle with a screwdriver, which will damage the coating of the throttle, which is not worth the loss.