Car Blog

Igniting a Spark
Your Volvo has thousands of parts in it. Some play a crucial role in the car, while others do not. Some are used all the time, while some are needed only for a specific time. One of the latter is your Volvo’s ignition coil. Also called a spark coil, the ignition coil is an induction coil in the automobile’s ignition system. The Volvo ignition coil transforms a storage battery’s 12 volts into the thousands (which sometimes could reach as high as 120,000 volts) needed to ignite the spark plugs. Invented by A. Kent Atwater in 1921, the ignition coil is a simple transformer that has two sides: the 12 volt or primary side and the high voltage or secondary side. The primary side contains a few hundred turns of a large diameter wire and it builds up the magnetic field in the coils. On the other hand, the high voltage side contains thousands of turns of small diameter wire. The coil uses electromagnetic induction to create the high voltage. When the voltage in the primary side is turned off, the collapsing magnetic field in the secondary side induces a voltage in the secondary side, producing thousands of volts. In older vehicles, a single, large ignition coil would serve all the spark plugs, distributing voltage via an ignition distributor. In modern systems, the distributor is omitted and ignition is controlled electronically, instead. Much smaller coils are used with one coil for each spark plug or one coil serving two spark plugs (so two coils in a four-cylinder car). These coils may be remote-mounted or they may be placed on top of the spark plug (coil-on-plug or direct injection). Where one coil serves two spark plugs (in two cylinders), it is through the “wasted spark” system. In this arrangement, the coil generates two sparks per cycle to both the cylinders. The fuel in the cylinder that is nearing the end of its compression stroke is ignited, whereas, the spark in its companion nearing the end of its exhaust stroke has no effect. The wasted spark system is more reliable than a single coil system with a distributor and cheaper than coil-on-plug. Where the coils are remote mounted, they may all be contained in a single molded block with multiple high-tension terminals. This is commonly called a coil-pack. Your Volvo ignition coils are part of a larger system, which is the ignition system. The ignition system is part of an even larger engine system. The ignition system’s primary responsibility is the timely burning of the fuel-air mixture in the engine. Your Volvo user’s manual would carry the recommended service interval for your ignition system, including your Volvo ignition coil. Your Volvo engine might run rough, buck, surge, stall or even get poor fuel economy. These are signs that your ignition system might need servicing as they are potentially an ignition system problem. When this happens, drive to the nearest Volvo dealership and have a qualified technician take a look around. Your Volvo engine might be in problem in the long run. John Garrett is an automobile mechanic who knows every crook and cranny of his truck. He's also a vintage car enthusiast , and he's dedicated to fixing and restoring them. He is a motorist who believes in continuous research and improvement.
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Tips On Buying Warranty For Used Cars
Used car buyers need to get their money?s worth as soon as their purchase has been confirmed. New or not, cars should have warranties. It is a right, not a privilege. The following are tips to better your chances of getting the best warranty for your money. Know what you are buying Some people who avail themselves of auto warranty coverage usually have a notion that they are purchasing a special shield that protects their vehicle from unnecessary wear and tear. Though this is true, this idea is primarily bound to a contract that the buyer should read prior to signing anything. There are instances when consumers buy a used car then expect the warranty company to get their cars back in shape for them. Buyers then unnecessarily file a complaint and get angry once their request is denied simply because their understanding of the conditions that constitute the warranty differs from what the warranty company has explicitly stated on their contract. It is advisable therefore to read in order to avoid uncalled for weeping. See through the ?lies.? Do not believe when auto warranty companies claim that their warranty can not be refunded. One hundred percent of extended car warranties are refundable within thirty days provided no claims have been made. If in any instance you feel that you were in some way forced to purchase or getl a Ford, Hyundai or Honda warranty that you didn?t want, do not hesitate to get your money back. Sift through their trashing If a warranty company has a good enough standing, it does not need to trash the competition or badmouth the other company?s warranty contract. You need to see them point out their own warranty company merits, offers and packages and not the competitor?s ?worthless? clauses in order to make a sale. Though it is a competitive world out there, the only way to stand out is to offer excellent and ethical service. In this case, action speaks louder than words. Avoid buying auto warranty from you dealer Though it is extremely convenient to do so, the effects are short-term. The price car dealers? offer for extended auto warranty, believe it or not, is usually two to three times higher than the normal rate. Plus, their contracts have far too many limitations and unfair clauses that buying warranties from first-rate warranty companies that provide better service for half the price, is a clearer and ? should be - the only option. Gregory Ashton, your resident automobile enthusiast, bringing to you over 20 years of vehicular passion, and expertise; presents for your approval his insider secrets on selecting, buying, and maintianing the car that is ideal for you. <a href="http://www.best-car-buying-tips.com" title="http://www.best-car-buying-tips.com" target="_blank">http://www.best-car-buying-tips.com</a>
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