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 »

A diesel engine does not need spark plugs because the compressed air ignites on its own. This is different than gasoline engines, which operate at lower temperatures. Because of this, they need spark plugs to cause the i... More »

When a vehicle has problems starting, idles roughly, the engine misfires or surges, lacks acceleration or has a noticeable decrease in fuel efficiency, the spark plugs may not work properly. Spark plugs may cease working... More »

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 »

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 »

When a vehicle has problems starting, idles roughly, the engine misfires or surges, lacks acceleration or has a noticeable decrease in fuel efficiency, the spark plugs may not work properly. Spark plugs may cease working... More »

Worn or damaged valve guides, worn or damaged piston rings, rich fuel mixture and a leaky head gasket can all be causes of spark plugs fouling. An improperly performing ignition system might also be a cause for spark plu... More »