However, if you're asking about your car's fuel system, here are some signs you might need a tune-up:
* Reduced fuel efficiency: You're getting fewer miles per gallon than usual.
* Rough idle: The engine shakes or vibrates when idling.
* Engine misfires: The engine sputters or hesitates when accelerating.
* Hard starts: The engine takes a long time to start.
* Black smoke from the exhaust: This could indicate a problem with your fuel injectors or air/fuel mixture.
* Check engine light: If your check engine light is on, it's always best to get it checked by a mechanic.
If you experience any of these symptoms, it's a good idea to take your car to a mechanic for a fuel system tune-up. They can inspect your fuel injectors, fuel filter, spark plugs, and other components to ensure everything is working properly.
