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What Is Involved with an Engine Tune-Up?

Last updated 5 years ago

In addition to other routine services such as oil and fluid changes, a tune-up is a critical maintenance procedure that ensures your car is running at its best. During a tune-up, your auto service and repair professional should inspect your engines, belts and hoses, as well as components of the ignition and fuel injection system. Below, you will find more information about some of the procedures performed during engine tune-ups.

Ignition Timing Adjustment The spark plugs in your vehicle must ignite the compressed mixture of air and fuel inside your cylinders at the correct time in order to maximize power and minimize emissions. If the spark plug fires too late or too early, it can negatively affect your fuel economy as well as shorten your engine’s life. An electronic engine control unit usually controls the ignition system on modern cars, and during a tune-up this unit can be programmed to adjust ignition timing.

Fuel Injection System Cleaning Modern cars supply gasoline to the engine via a fuel injection system. A pump sends fuel through a pipe called the fuel rail to each of the injectors, where an electronically controlled valve sprays the fuel into the intake system through an atomizing nozzle. As part of a tune-up, a technician should clean the fuel injection nozzles and inspect the fuel lines to ensure they don’t have any leaks.

Filter Replacement Your automobile is equipped with several filters that prevent dust and debris from clogging various sensitive systems. The engine air filter keeps abrasive contaminants out of the cylinders, the oil filter keeps the oil flowing smoothly, and the fuel filter keeps the fuel injection system clean. If you did not have these filters replaced when you get your oil changed, make sure your technician replaces them during a tune-up.

Bring your car to A-1 Auto Tech, Inc. of Mountain View for all your auto maintenance and repair needs. As part of our commitment to excellent service and quality work, we guarantee all our repairs for 24 months or 24,000 miles. To schedule an appointment for your vehicle, call us at (888) 722-1970.


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