Checking Fluids

Keeping your vehicle in tip-top shape requires constant monitoring of vital fluids. Read you owners manual and look for a diagram of the engine. Most times there will be a diagram showing where to check all the major fluids. This should be your starting point. If your manual is lost in the glove box or you never had one, then ask your mechanic or a friend who knows cars to show you all the places to check. There are 4 major levels to check on most cars. ·Engine oil - Usually towards the front of the engine and marked "OIL" Always check your oil level with the engine OFF. Remove the dipstick and wipe the oil off with the rag or towel then put the dipstick back into the hole. Now pull out and get a reading. You might have to hold the dipstick to the light to get a good reading as fresh oil can sometimes be hard to see. On the dipstick there will be two marks indicating a maximum and minimum level for the oil. Make it a habit of checking your oil every two weeks. ·Transmission fluid - If you have an automatic transmission then you will have a dipstick to check the fluid level. It is most commonly found towards the back of the engine compartment or towards the passenger side. You should find out how to check the fluid by looking at the owner's manual or on the dipstick itself. Most cars have to be running with the transmission in park or neutral. Also the transmission should be warmed up to give a true reading. Make sure the car has been driven for a short distance to make sure everything is up to operating temperature. Checking the level is just like checking your oil, wipe off dipstick, replace, pull out again and check level. If you have a manual transmission there is no dipstick and to check the fluid level you must crawl under the car and remove a fill plug. I would have your mechanic check this for you once a year if you do not feel comfortable doing this. ·Engine coolant - -- CAUTION -- Never open your radiator cap when the engine is hot ! The pressure in the system can send hot coolant splashing out on to you. Most cars have an overflow bottle, which will have level markings. Keep the coolant between these markings. If you have to open the radiator, make sure the engine is cold. ·Power steering fluid - Your car uses oil to assist in steering the car. The fluid is usually checked at the pump, but can be away from the pump in a separate reservoir. Like the transmission, this fluid should also be checked when up to operating temperature. Most commonly the level is measured by a small dipstick attached to the cap of the reservoir. ·Brake fluid - On most newer cars you can check brake fluid level without removing the cap on the master cylinder. There will be level markings on the side of the plastic reservoir. If you have to remove the cover to check the fluid level, be careful not to spill any fluid on the surrounding paint. Brake fluid makes a nice paint remover :-) ·Windshield washer fluid - That's the magic blue liquid that squirts out of your hood. Most reservoirs have the level marked on the side but some newer cars have them buried underneath everything so you can not see. Just fill to the top, there is no harm in overfilling. If you need to add any fluids to bring the levels up, a funnel is helpful to avoid spills. Keep track of how often you add oil, and transmission fluid. Frequent additions can point to leaks and engine wear.

The Suspension System On A Car Explained

"Suspension," when discussing cars, refers to the use of front and rear springs to suspend a vehicle's "sprung" weight. The springs used on today's cars and trucks are constructed in a variety of types, shapes, sizes, rates, and capacities. Types include leaf springs, coil springs, air springs, and torsion bars. These are used in sets of four for each vehicle, or they may be paired off in various combinations and are attached by several different mounting techniques. The suspension system also includes shocks and/or struts, and sway bars. Back in the earliest days of automobile development, when most of the car's weight (including the engine) was on the rear axle, steering was a simple matter of turning a tiller that pivoted the entire front axle. When the engine was moved to the front of the car, complex steering systems had to evolve. The modern automobile has come a long way since the days when "being self-propelled" was enough to satisfy the car owner. Improvements in suspension and steering, increased strength and durability of components, and advances in tire design and construction have made large contributions to riding comfort and to safe driving. Cadillac allegedly produced the first American car to use a steering wheel instead of a tiller. Two of the most common steering mechanisms are the "rack and pinion" and the standard (or recirculating-ball) systems that can be either manual or assisted by power. The rack and pinion was designed for sports cars and requires too much driver muscle at low speeds to be very useful in larger, heavier cars. However, power steering makes a heavy car respond easily to the steering wheel, whether at highway speeds or inching into a narrow parking place, and it is normal equipment for large automobiles. The suspension system has two basic functions, to keep the car's wheels in firm contact with the road and to provide a comfortable ride for the passengers. A lot of the system's work is done by the springs. Under normal conditions, the springs support the body of the car evenly by compressing and rebounding with every up-and-down movement. This up-and-down movement, however, causes bouncing and swaying after each bump and is very uncomfortable to the passenger. These undesirable effects are reduced by the shock absorbers. The above information is directly from the Auto Insight program, which you can buy online from AutoEducation.com. Common Problems: ·Shocks and struts can wear out and affect handling. If you car bounces excessively over bumps and leans hard in corners, your shocks could be warn. Look behind the wheel for the shock or strut and look for leaking oil. This is a sure sign of a worn shock or strut. ·Ball joints. Ball joints wear and can cause your car to wander while driving down the road. This is dangerous as they can separate and cause you to lose control. Preventive maintenance: ·Check your shocks or struts for leakage frequently. Also pay attention to how your car handles. If you notice the ride deteriorating take your car in to have the struts checked. ·Ball joints should be checked when your car is inspected, if not, have your mechanic check them at least twice a year. ·At each oil change make sure you or your mechanic lubricates the ball joints and any other suspension components. Some components cannot be lubricated as they are sealed from the factory.

The Exhaust System

Your car's exhaust system carries away the gases created when the fuel and air are burned in the 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 in the exhaust system or in the passenger compartment where exhaust fumes could enter. Let's begin by listing the parts of the exhaust system and their functions. Exhaust manifold: The exhaust manifold attaches to the 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 in the exhaust. From this the computer can add or subtract fuel to obtain the correct mixture for maximum fuel economy. The oxygen sensor is mounted in the exhaust manifold or close to it in the 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 between the exhaust manifold and the muffler. Muffler: The muffler serves to quiet the exhaust down to acceptable levels. Remember that the combustion process is a series of explosions that create allot of noise. Most mufflers use baffles to bounce the exhaust around dissipating the energy and quieting the noise. Some mufflers also use fiberglass packing, which absorbs the sound energy as the gases flow through. Exhaust pipe: Between all of the above mention parts is the exhaust pipe which carries the 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: Well the worst enemy of your exhaust system is corrosion.... or more commonly known as rust. Rust is caused by moisture reacting with the iron in the steel and forming iron oxide. Moisture, or water vapor is present in the exhaust as a by-product of combustion and the catalytic converter. Moisture can also come from the outside in the form of rain. Short trips in your car can shorten the life of your exhaust system. When you shut down your engine whatever water vapor is in the pipes condenses and turns back into a liquid. On a short trip the water never has a chance to get hot enough to turn back into water vapor and just stays in the system and rusts away the pipes. If you drive for short distances consider replacing your exhaust system with stainless steel when the plain steel one rusts through. If you drive more than 15 miles at a time then you should not have to worry about this. If you live in an area, which uses salt on the roads in the wintertime, make sure to wash the underside of you car with water every few weeks. Salt speeds up the corrosion process and getting it off as soon as possible will help stop the corrosion. Make sure you run the engine after washing to drive off all of the water on the pipes. Noticing a decrease in your gas mileage? Your oxygen sensor could be going south on you. As time goes on the oxygen sensor begins to wear out and becomes less accurate. This sometimes results in a rich fuel mixture where your engine burns more fuel than is needed. Most of the time your check engine light will come on and alert you to a failing oxygen sensor. I suggest changing the oxygen sensor every 60,000 miles just to be safe. Even though your check engine light might not be on, you could be using more gas than is needed. Pay a few bucks and change the sensor, your wallet will thank you when you have to buy less gas down the road. The next part in line to go is the muffler. Most of the time mufflers rust through and need to be replaced. There are allot of options out there for replacement mufflers. Some cheap and some expensive. It holds true... you get what you pay for. If you plan on keeping your car for any period of time, spend the extra cash and get an OEM muffler or a high quality name brand muffler. On rare occasions the catalytic converter will become clogged and need to be replaced. Symptoms include loss of power, heat coming from the floor of your car, glowing red converter or a sulfur smell. Never let a mechanic tell you that you can do without the catalytic converter. Removing this component is illegal in most states and can lead to a hefty fine to the government if you are not careful. That's about it for the exhaust system; just remember that rust is the biggest enemy to your exhaust system. Take the above-mentioned steps and your exhaust system will last a long time

How to Change A Tire

It always happens at the worst times! You need to know how to change a tire even if you have an auto club membership. Depending on where you get a flat, there may not be a phone nearby to call a tow truck. Let's take is step by step and always remember to read your owners manual, there will be detailed instructions relating to your car there. I should mention also a few tips for getting to the side of the road safely if you have a blowout on the road. ·Stay calm, do not panic ·Slowly take your foot off of the gas and let the vehicle coast to a stop. ·Do not make any sudden braking or steering actions. ·Put your flashers on to alert other drivers. ·Now that you are safely off of the road. Step 1: Make sure you are on firm level ground and away from traffic. If you are not, then try to drive to a better spot, but only if you can do it safely. Avoid going back onto the road and into traffic. Step 2: Set your emergency brake and put the car in Park or 1st gear if you have a manual transmission. Make sure the engine is turned off. Step 3: Locate the spare tire, jack, and lug wrench. These are usually located in the trunk underneath the carpet on cars. Trucks usually have the jack and lug wrench behind the seat or under the hood, with the spare tire under the bed. Step 4: Typically there are instructions printed on the jack or somewhere near the storage compartment. Read these instructions, they will tell you where to jack the vehicle and any special steps you will need to take. Step 5: First remove the hubcap or wheel cover. The lug wrench often has a flat end, which you can use to pry off the cover. If not, a screwdriver will work just fine. Step 6: Before you jack the car up you will want to break loose the lug nuts. The weight of the car will keep the wheel from spinning and allow you to apply more force to the nuts. You do not want to completely remove the lug nuts yet.... just break them loose. Once the lug nut begins to move, STOP and move onto the next one. I often carry a small pipe, which will fit over the lug wrench. This pipe can provide additional leverage and allow you to get those stubborn lug nuts off. Always remember righty tighty, lefty loosy. Turn the lug nuts left or counter clockwise to loosen. Step 7: Now it's time to jack up the car. Make sure you know where the manufacturer has placed jacking points by reading the owners manual or the instructions near or on the jack. Most cars will have a reinforced lip where the jack can be placed. If you can not locate this, look for a solid portion of the frame to jack on. Make sure the jack is on firm level ground and start jacking. Take it slowly and only go as far as you need to get the wheel off. Step 8: The wheel is off the ground and it's time to remove the lug nuts. Use the wrench or your fingers to remove the nuts. Slowly take the wheel off and set it to the side. Step 9: Get the new wheel and put it on the car. Tighten the lug nuts as tight as you can without the wheel spinning. Don't worry about getting the nuts super tight, as you will do the final tightening when the car is off of the jack. Step 10: Let the car down off of the jack and get your lug wrench. Tighten the lug nuts in a star pattern if there are five nuts. Start with one lug nut and skip the next one until they are all tight. If you have 4 nuts, just tighten the opposite nut from where you started and then the remaining two in any order. Step 11: Replace your wheel cover or hubcap and clean up the jack, lug wrench and blown tire. If your spare tire had air in it, you should be able to continue your journey. Finally: Remember if you have a temporary spare tire (AKA doughnut) you can only drive a few miles to a service station and usually not over 50 MPH.

An Automobiles fuel system

The fuel system feed your engine the gasoline/diesel it needs to run. If anyone of the parts in the system break down your engine will not run. Let's look at the major parts of the fuel system, Fuel tank: Basically a holding tank for your fuel. When you fill up at a gas station the gas travels down the filler tube and into the tank. In the tank there is a sending unit, which tells the gas gauge how much gas is in the tank. Fuel pump: On newer cars the fuel pump is usually installed in the fuel tank. Older cars have the fuel pump attached to the engine or on the frame rail between the tank and the engine. If the pump is in the tank or on the frame rail then it is electric and is run by your cars battery. Fuel pumps mounted to the engine use the motion of the engine to pump the fuel Fuel filter: Clean fuel is critical to engine life and performance. Fuel injectors have tiny openings, which clog easily so filtering the fuel is the only way to prevent this. Filters can be before or after the fuel pump, sometimes both. Fuel injectors: Most domestic cars after 1986 and earlier foreign cars came from the factory with fuel injection. Instead of a carburetor to mix the fuel and air, a computer controls when the fuel injectors open to let fuel into the engine. This has resulted in lower emissions and better fuel economy. The fuel injector is basically a tiny electric valve, which opens and closes with an electric signal. In the picture below you can see the injectors towards the outer part of the intake. By injecting the fuel close to the cylinder head the fuel stays atomized ( in tiny particles ) so it will burn better when ignited by the spark plug. Carburetors: A carburetor takes the fuel and mixes it with air without computer intervention. While simple in operation, they tend to need frequent tuning and rebuilding. This is why most newer cars have done away with carburetors in favor of fuel injection. Common Problems: I would say the most common problem is a clogged fuel filter. Make sure you follow your manufacturers recommendations as to when you should change the fuel filter. This information should be in your owner's manual. Symptoms include sputtering at high speeds or engine not starting at all. Always check the ignition system first, if that's ok then the next suspect is the fuel filter. Next most common problem is the fuel pump failing. Most modern electric fuel pumps can be heard when you turn the key on. If you don't hear the pump running and your car will not start, it could be your fuel pump. The first thing a mechanic will check is the relay, which sends power to the pump. If this is operating correctly then the pump will have to be replaced. Last but not least are dirty injectors. While the fuel filter does a good job of filtering the fuel, it's not perfect. Over time deposits and tiny particles lodge themselves in the injectors. This can clog and injector and prevent it from delivering the fuel the engine needs. It can also cause an injector to stick open and send too much fuel into the engine. A regular addition of fuel system cleaner like STP Injector Cleaner, or Techtron fuel system cleaner can help keep your injectors clean. Most gas stations, department stores and all automotive parts stores will have a good cleaner available. Add it to your empty tank right before you fill up and it will clean as you drive. I recommend doing this every 3 months to keep your injectors performing like new. Mechanics also offer a cleaning service where they actually disconnect the fuel line and flush cleaner through the engine. This is only necessary when you let your injectors get to a point where they can not be cleaned by a store-bought product. Regular use of a good in-tank cleaner will keep you from having to pay for this service. Where do you buy your gas? Believe it, or not, it can make a difference. Always buy from a well know national brand service station. Gas stations, which are not affiliated with one brand of gas, tend to get whatever is left at the end of the day from the delivery truck. One day them might get Texaco, and Exxon another. Also water mixed with gas will cause problems with your engine. The engine will not run right, plus the water will promote rust in the fuel system. I have experienced this when I purchased gas at some no-name gas stations. Your car will feel sluggish and sometimes refuse to run if there is enough water in the gas. Octane rating tip!!!! Putting super in the tank will not get you any more performance or gas mileage unless specifically recommended by your cars manufacturer. If your owners manual says put in 87 octane...... DO IT. You are throwing money out the window if you are filling up on Super or Premium and you only need Regular.
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Author:jackwang
Welcome to the world of cars

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