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A spark plug is a device that produces an electrical spark, which ignites the mixture of fuel and air in the engine's combustion chambers. A spark plug initiates the combustion in the internal combustion engine. More »

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ACDelco spark plugs are spark plugs sold under the automotive parts brand name ACDelco. ACDelco is a brand name owned by General Motors, which manufactures factory parts of GM vehicles and aftermarket parts for other veh... More »

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Spark plug torque is the recommended amount of force to use when installing spark plugs so that they are not loose or overly tight, either of which prevents them from functioning properly. Torque is measured by a torque ... More »

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Parts and tools needed for a car's tune-up include spark plugs, a fuel filter, a socket wrench, a spark plug socket, a spark plug gapping tool, the service manual, screwdrivers, crescent wrenches, a distributor cap, spar... More »

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Multi-point fuel injection, or MPFI, is a gasoline delivery system that uses four individual fuel injectors to evenly disperse gas into an engine´s combustion chambers. MPFI was developed to succeed the older single-poin... More »

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An automobile tune-up consists of a check of a vehicle's fuel filter, air filter, spark plugs, spark plug wires and battery. The PCV valve, belts, lights and tires are also checked. An oil change is performed and the car... More »

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A tune-up on cars made before about 1990 consists of contact point, air filter and spark plug replacement, and the adjustment of igniting timing, carburetor and fuel mixture. A tune-up for cars made since 1990 involves s... More »

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