An engine tune-up is the process of inspecting and replacing components of the engine that are essential to ignition and engine operation. It's a type of preventative maintenance performed on your vehicle to ensure it continues to perform well and even extend its life. A tune-up is typically scheduled at least once a year. A comprehensive tune-up can include:
Replace spark plugs and wires/coil boots
Set ignition timing - if applicable
Replace engine air filter (at least once a year)
Replace fuel filter - if applicable
Clean the throttle body - if applicable
Perform a fuel system cleaning
Replace distributor cap and rotor - if applicable (for older vehicles)
Replace PCV valve - if applicable
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