Why is there a lot of oil in the accelerator?

There is a lot of oil in the throttle: 1, the waste gas valve is damaged; 2. Turbocharger burns engine oil; 3. The return air is too large under the compression of the engine, which causes the oil to flow from the waste gas pipe, waste gas valve or one-way valve to the throttle or water inlet pipe; 4. There is a lot of oil in the throttle valve due to the loosening or falling off of the rocker shaft screw. Precautions for using throttle: 1. Clean the throttle frequently. Too much throttle sludge will cause insufficient engine power and increase fuel consumption; 2. Oil the fixed metal beam ring before disassembly, so as to prevent the teeth from slipping; 3. Keeping the throttle opening after cleaning and before cleaning will cause the intake air to be too large, which will make the engine shake and accelerate weakly when starting.