The Exhaust System

Written by Kevin Schappell

Your car's exhaust system carries awayrepparttar gases created whenrepparttar 102757 fuel and air are burned inrepparttar 102758 combustion chamber. These gases are harmful to humans and our environment. A frequent check of your exhaust system is a must to provide for you and your family's safety. Make sure there are no holes inrepparttar 102759 exhaust system or inrepparttar 102760 passenger compartment where exhaust fumes could enter. Let's begin by listingrepparttar 102761 parts ofrepparttar 102762 exhaust system and their functions. Exhaust manifold: The exhaust manifold attaches torepparttar 102763 cylinder head and takes each cylinders exhaust and combines it into one pipe. The manifold can be made of steel, aluminum, stainless steel, or more commonly cast iron. Oxygen sensor: All modern fuel injected cars utilize an oxygen sensor to measure how much oxygen is present inrepparttar 102764 exhaust. From thisrepparttar 102765 computer can add or subtract fuel to obtainrepparttar 102766 correct mixture for maximum fuel economy. The oxygen sensor is mounted inrepparttar 102767 exhaust manifold or close to it inrepparttar 102768 exhaust pipe. Catalytic converter: This muffler like part converts harmful carbon monoxide and hydrocarbons to water vapor and carbon dioxide. Some converters also reduce harmful nitrogen oxides. The converter is mounted betweenrepparttar 102769 exhaust manifold andrepparttar 102770 muffler. Muffler: The muffler serves to quietrepparttar 102771 exhaust down to acceptable levels. Remember thatrepparttar 102772 combustion process is a series of explosions that create allot of noise. Most mufflers use baffles to bouncerepparttar 102773 exhaust around dissipatingrepparttar 102774 energy and quietingrepparttar 102775 noise. Some mufflers also use fiberglass packing, which absorbsrepparttar 102776 sound energy asrepparttar 102777 gases flow through. Exhaust pipe: Between all ofrepparttar 102778 above mention parts isrepparttar 102779 exhaust pipe which carriesrepparttar 102780 gas through it's journey out your tail pipe. Exhaust tubing is usually made of steel but can be stainless steel (which lasts longer due to it's corrosion resistance) or aluminized steel tubing. Aluminized steel has better corrosion resistance than plain steel but not better than stainless steel. It is however cheaper than stainless steel. Common Problems: Wellrepparttar 102781 worst enemy of your exhaust system is corrosion.... or more commonly known as rust. Rust is caused by moisture reacting withrepparttar 102782 iron inrepparttar 102783 steel and forming iron oxide. Moisture, or water vapor is present inrepparttar 102784 exhaust as a by-product of combustion andrepparttar 102785 catalytic converter. Moisture can also come fromrepparttar 102786 outside inrepparttar 102787 form of rain. Short trips in your car can shortenrepparttar 102788 life of your exhaust system. When you shut down your engine whatever water vapor is inrepparttar 102789 pipes condenses and turns back into a liquid. On a short triprepparttar 102790 water never has a chance to get hot enough to turn back into water vapor and just stays inrepparttar 102791 system and rusts awayrepparttar 102792 pipes. If you drive for short distances consider replacing your exhaust system with stainless steel whenrepparttar 102793 plain steel one rusts through. If you drive more than 15 miles at a time then you should not have to worry about this.

Your Cars Electrical System

Written by Kevin Schappell

Whenrepparttar automotive industry was in its infancy, it used electricity only to igniterepparttar 102756 fuel insiderepparttar 102757 engine. Byrepparttar 102758 late 1920's,repparttar 102759 electric starter replacedrepparttar 102760 hand crank, electric headlights made acetylene lamps obsolete andrepparttar 102761 braying ofrepparttar 102762 electric horn drowned outrepparttar 102763 squeak ofrepparttar 102764 hand-squeezed air horn. Today, an automobile requires an elaborate electrical system of circuits just to produce, store, and distribute allrepparttar 102765 electricity it requires simply for everyday operation. The first major component inrepparttar 102766 electrical system isrepparttar 102767 battery. The battery is used to store power for starting, and for running auxiliary devices such as clocks, radios and alarms whenrepparttar 102768 engine is off. The next major component isrepparttar 102769 starter motor, which is used to startrepparttar 102770 engine. The third component is a charging device powered byrepparttar 102771 engine, known asrepparttar 102772 alternator. It powersrepparttar 102773 electrical system whenrepparttar 102774 car is running, and restoresrepparttar 102775 charge withinrepparttar 102776 battery. With these basic components,repparttar 102777 car maintains its supply of electricity. A device calledrepparttar 102778 voltage regulator keepsrepparttar 102779 power level stabilized, andrepparttar 102780 fuse box keeps minor problems from becoming major ones. Many different auxiliary electrical devices are used in modern cars, such as: radios, cellular phones, rear window defrosters and electric door locks, as well as a vast array of motors powering everything fromrepparttar 102781 moon roof on down. The above information is directly fromrepparttar 102782 Auto Insight program, which you can buy online from Common Problems: ·The battery is usuallyrepparttar 102783 first part ofrepparttar 102784 system to wear out. Most batteries last between 3 and 7 years depending on brand and design. Batteries can be fine on minute, and deadrepparttar 102785 next. More on this later. ·Blown fuse: Is one part ofrepparttar 102786 electrical system not working likerepparttar 102787 interior lights or dash lights? The first thing to check isrepparttar 102788 fuses. Look forrepparttar 102789 fuse panel underrepparttar 102790 dash, inrepparttar 102791 glove box, or even inrepparttar 102792 engine compartment in some cars. Most fuse boxes will be labeled by circuit. Modern cars use a blade type fuse which is rectangular in shape and transparent. Look forrepparttar 102793 wire, which runs throughrepparttar 102794 fuse, and see if it is burned through. Any discoloring ofrepparttar 102795 fuse is a good signrepparttar 102796 fuse has blown. If you have doubts, replace with a new fuse and testrepparttar 102797 system, which is not working. ·Alternator: Does your car start ok, but your headlights dim when idling. It could be a bad alternator. Whenrepparttar 102798 alternator cannot produce enough electricity to keeprepparttar 102799 electrical systems running andrepparttar 102800 battery will have to be used to take uprepparttar 102801 slack. This will eventually wear downrepparttar 102802 battery and not allow your car to start. Troubleshooting: I don't think there is a tougher system to troubleshoot on your car thanrepparttar 102803 charging/starting system. This is due torepparttar 102804 fact that there are many things that can go wrong and it's tough to test some components without special equipment. Let's go over some possible situations and their possible causes. ·Car won't start, all I hear is a click butrepparttar 102805 engine does not turn. oFirst check all battery cables for corrosion as this will keep power from flowing freely torepparttar 102806 starting system. If they are dirty, clean with a wire brush and reattach. Apply a light coat of grease torepparttar 102807 top ofrepparttar 102808 terminals to prevent further corrosion. oBattery could not have enough power stored in it to spinrepparttar 102809 engine. This can be caused by a bad cell inrepparttar 102810 battery or from a bad alternator not chargingrepparttar 102811 battery whenrepparttar 102812 engine is running. If you can getrepparttar 102813 car to a mechanic, have him or her testrepparttar 102814 battery and charging system with a special tester. This tester places a load onrepparttar 102815 battery and can tellrepparttar 102816 condition. They can also check to see ifrepparttar 102817 alternator is working to it's full potential. oStarter or solenoid could be bad. If you can not jump startrepparttar 102818 car and all ofrepparttar 102819 battery cables are ok then suspectrepparttar 102820 starter.

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