The term " Italian tuneup" denotes the driving of a performance car, such as a Ferrari, by mechanics finishing the tune-up to burn out any built-up carbon. Replacement of the air filter and other filters,.Inspection and possible replacement of ignition system components like spark plugs, contact breaker points, distributor cap and distributor rotor,.Adjustment of the carburetor idle speed and the air-fuel mixture,.This can be attributed to improvements in the production process in which imperfections and errors reduced by computer automation, and significant improvement in the quality of consumables such as the availability of synthetic engine oil. Modern automobile engines typically require a small number of tune-ups over the course of an approximate 250,000-kilometre (160,000 mi) or a 10-year, lifespan. Tune-ups are needed periodically according to the manufacturer's recommendations to ensure the vehicle runs as expected. The term "tune-up" usually denotes the routine servicing of the engine to meet the manufacturer's specifications. ( December 2018) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. The ECU handles these tasks, and must be calibrated properly to match the engine's hardware. On modern engines equipped with electronic ignition and fuel injection, some or all of these tasks are automated but they still require initial calibration of the controls. Setting the idle speed, air-fuel ratio, carburetor balance, spark plug and distributor point gaps, and ignition timing were regular maintenance tasks for older engines and are the final but essential steps in setting up a racing engine. Performance tuning of an engine can involve revising some of the design decisions taken during the development of the engine. Tuning can include a wide variety of adjustments and modifications, such as the routine adjustment of the carburetor and ignition system to significant engine overhauls. These goals may be mutually exclusive an engine may be de-tuned with respect to output power in exchange for better economy or longer engine life due to lessened stress on engine components. Vintage engine testing equipment that can test ignition timing, ignition dwell, manifold vacuum and exhaust emissionsĮngine tuning is the adjustment or modification of the internal combustion engine or Engine Control Unit (ECU) to yield optimal performance and increase the engine's power output, economy, or durability.
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