Can the throttle, injector and three-way catalytic converter be cleaned without disassembly?

The above three parts can be cleaned without disassembly.

The throttle should be cleaned without disassembly. Remove the intake pipe in front of the throttle valve and let it leak from the throttle body. Spray carburetor cleaner or electronic throttle cleaner on the throttle body, and pay attention to the position of the outer edge of the disc and the shaft. These positions are the key points that cause the throttle to turn inflexible and stuck.

There are two ways to clean the injector without disassembly. One is to add a cleaning agent to the gasoline tank, and the other is to use the injector cleaning agent instead of gasoline for combustion cleaning. Both modes suggest that it is best to add cleaning agent to gasoline, which is convenient but time-consuming. The cleaning of fuel injector is actually the cleaning of engine carbon deposit.

The disassembly-free cleaning of three-way catalytic converter can be completed by directly introducing the cleaning agent of three-way catalytic converter into the oil tank, which is very convenient, but the effect is poor.