Resistance: Rated in ohms-per-foot, resistance isВ the ignition wireвЂ™s tendency to resist the flow of the electric current. To fully comprehendВ the demands put on your spark plug ignition wires, you need to first understand a coupleВ key terms. It can be a tall order, but those are the qualifications for a good set of spark plug wires. Plus, they have toВ survive in theВ high temperatures and extreme environment of the engine compartment. On top of that, the wires must often deal with largerВ amounts of voltage from modern ignitionsВ and aftermarketВ ignition coils. The challenge is to get the maximum amount of this charge to the plugs without creating interference (EMI or RFI) for nearby electrical components. The number one job of any spark plug wire is to transfer an electrical charge from your ignition to your spark plugs. WeвЂ™ll aim to remedy that here by covering the basics of choosing high performance spark wires for your ride. ThatвЂ™s why itвЂ™s important to select a good quality set of spark plug ignition wires to deliver juice to your spark plugs.Д®ven though spark plug wires are simple parts (there are absolutely no moving mechanical parts to them), thereвЂ™s surprisingly little information on the Internet about choosing the right spark plug wires for a given application. DonвЂ™t over tighten to prevent damage to the threads of the spark plug hole.Spark plug wires canвЂ™t add horsepower (despite what some may claim), but they can adversely affect your vehicleвЂ™s performance. Spark plugs have a built-in gasket, so using a torque wrench, tighten it down until you feel resistance-then slowly tighten the plug until it is bottomed. Take the new spark plug and screw it into the cylinder head of your engine. Next, unscrew and remove the old plug counterclockwise with your ratchet wrench, extension bar, and spark-plug socket.Д¤. Spark plugs are pre-gapped from the factory, so unless the new spark plugs packaging is damaged, itвЂ™s likely that the gap is correctly set.ДЈ. First, check that the spark plug gap with a so-called gap or feeler gauge. Now itвЂ™s time to prepare the new spark plug. For newer cars with coil packs, disconnect the electrical connector by hand first, and then gently twist the coil pack, lifting it straight up and out.Дў. For cars with spark plug wires, use a pair of wire pliers to pull the plug wire off without damaging the connector boot. eBay Motors allows you to specify your year, make, and model to get the right spark plugs for your vehicle. Each manufacturer optimizes the design of the plugs for use in its engines. There are many different types of spark plugs. When you consider how a worn-out spark plug decreases performance and efficiency-and the risk of a seized plug-taking a few minute to replace an old spark plug is a no-brainer. If ignored for too long, spark plugs can be seized in the cylinder head-and removing a stuck plug can be challenging. Modern spark plugs can last up to 100,000 miles, but they gradually wear out over time. Changing your spark plugs is a straightforward and inexpensive way to keep your car running smoothly, to optimize your engineвЂ™s performance, and to help maintain the best possible fuel economy.

How to install spark plugs and wires