Over time, spray from the fuel injectors in a car engine clogs up, causing the nozzles of the fuel injectors to become clogged. A fuel system tune-up can help resolve this issue.
As fuel injector nozzles become clogged, they burn more fuel but result in less power. Cleaning the fuel pump, fuel lines and injectors is the first step in a fuel system tune-up. Adding more cleaner to a warm engine helps to remove debris and any remaining clogs from the combustion chambers. Cleaning the air intake is the final step in a fuel system tune-up and removes deposits that restrict air flow.