What type of deposits can impede the functionality of an exhaust system?

Coke deposits can significantly impede the functionality of an exhaust system because they are a carbonaceous residue formed by the thermal decomposition of hydrocarbons. These deposits accumulate in high-temperature areas, particularly in the exhaust valves, manifolds, and turbochargers. When coke builds up, it can restrict the flow of exhaust gases, leading to increased back pressure, overheating, and potentially reduced engine performance. Additionally, the presence of coke deposits can impair the overall efficiency of the exhaust system, as they interfere with proper gas flow and can limit the effectiveness of emissions controls.

The buildup of coke requires specific maintenance practices to clean the system, as standard cleaning methods may not be effective against this tough residue. Regular inspection and maintenance of the exhaust system can help prevent the formation of coke deposits and maintain optimal engine performance.