Many of the older French cars, also called Grand Prix cars were not fitted with the modern day ignition coils. Ignition coils are the heart of the ignition system in an automobile, as it supplies a spark to make the engine fire, and to keep it going. Without the proper coils, the car would simply not run! Coils come in many different varieties and designs to suit the style of the various French cars that have been made over the years. The designs are normally quite stunning, but we will concentrate on the basics here.

The spark plugs in the cars that are fitted with gasoline-powered engines have two parts: the cone assembly and the plug assembly. The cone assembly is composed of the spark plug, which is the metal part that catches the spark and ignites the fuel, and is generally made from copper or brass. The plug assembly is usually made from steel and contains two pieces: a body shell with the air filter fitted within it and the flexible rubber spark plug.

French cars, like many vintage cars, used plain copper or brass ignition coils, which can be easily spotted when you look closely at the cars. However, there were a few modifications that were done to these coils, and some of the most common are as follows: changed the pins in order to increase the number of ignition coils, or used larger diameter sparks instead of the smaller ones, or some combination of the two. However, the single pieces of copper or brass ignition coils still form the core of the ignition system and are almost always very sleek looking.

Many modern day manufacturers, like Promise, include a spark plug cover in their products for installation on the ignition coil. This provides an extra layer of protection for the coils and increases the life of the unit, as well as being a stylish addition to any French car. When changing the size or type of spark plugs to match the specifications of your car's factory wiring, make sure you use the same size spark plugs that came with your original French car. If you buy a new Promise plug and use a different size, the performance and safety of your vehicle will be compromised.

The air filter is another component that can be easily overlooked when it comes to maintenance. The air filter is the part that absorbs, compresses, and neutralizes the impurities in the air that flow through your vehicle's combustion chamber. Because these impurities can cause the performance of your car to de-compress and/or lose efficiency, having a good air filter ensures that your French car will run smoothly. There are several different kinds of air filters available on the market today, so it is important to shop around and see which ones have the best performance for your needs. If you find that you can't find what you're looking for at any of your local auto parts stores, simply look online for an air filter manufacturer.

Finally, an important part of French cars' performance is the oil that is used to cool the engine. Because French cars are typically run at relatively high temperatures, there is a lot of friction that goes on in the engine compartment that causes the oil to build up. In order to keep your engine running smoothly, it is important to change the oil as needed. This means that your regular oil should last for roughly seven to ten thousand miles, but it is also a good idea to have your engine checked every now and then for oil leaks or other signs that the oil is beginning to go bad.