Regal1.6t Do you need to clean the throttle and engine carbon deposit for 4 years and 50,000 kilometers?

The throttle is like a human nose. It depends on the environment in which you opened it. Shorten the interval in dusty places. Generally, more than 20 thousand can be considered to check. Check the air filter more, take it out when it is empty, and change it frequently. This is the only barrier to air intake. The carbon deposit on the engine depends on where you drive. If you often drive on congested roads, there will definitely be more carbon deposits. It would be better to run at high speed. If you don't feel at ease, you can go to the store for infusion to clarify.