Harm of cleaning throttle valve without disassembly

The harm of disassembling and cleaning the throttle valve is that the valve is not thoroughly cleaned and there are potential safety hazards. Cleaning the throttle valve without disassembly means directly scrubbing the throttle valve with a rag sprayed with throttle cleaning agent without disassembling the throttle valve assembly. This operation is very simple and quick, but it is not effective for a particularly dirty throttle. In addition, some disassembly-free cleaning throttles are directly injected with spray for cleaning throttles, which has potential safety hazards. The injected liquid may be ejected when the car starts, which is not good for the car. It is suggested that the owner should not disassemble and clean the valve assembly by himself, but go to a professional 4S shop for disassembly and cleaning. Million car purchase subsidy