What Causes Carbon Deposits to Be Emitted from the Exhaust Pipe?

[VioletFitz]

The reason for carbon deposits being emitted from the exhaust pipe is generally incomplete combustion, which leads to the formation of carbon deposits that are expelled through the exhaust pipe. Solutions are as follows: Check for Equipment Faults: Typically, incomplete combustion causes carbon deposits. First, check for any fault codes, as there is usually a diagnostic result. If no testing equipment is available, start by inspecting and cleaning carbon deposits from the throttle body, then examine the spark plugs. If no issues are found, check the circuit and oxygen sensor, followed by the exhaust pipe's three-way catalytic converter. Check the Valves: If no problems are detected, inspect the valves for leaks, verify whether the cylinder pressure meets standards, and check for significant wear on the piston rings and cylinder liners. After ruling out mechanical issues, the problem may lie in excessive fuel injection in the fuel system, a faulty air flow sensor, or issues with the gasoline itself.