What Causes a Gas Cap Vacuum?

Take care when fueling up.Diagnosing problems with the fuel lines in your car is difficult unless you are experiencing acceleration problems. The fuel system operates under pressure to keep gasoline or diesel flowing smoothly into the combustion chamber of the engine. A littl…

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How Does a Coolant Overflow Bottle Work?

A cooling system must be kept in optimum condition for engine safety.In the context of automobile engines, overflow bottles and expansion tanks are separate entities. Expansion tanks have been the norm on most vehicles since the 1970s, but overflow bottles were an important part of both the philosophy and engineering…

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My 2007 Chevy Cobalt Needs an Antifreeze Flush

Despite its name, you could get the 2007 Cobalt in more colors than just dark blue.In the 2005 model year, Chevrolet began phasing out the aging Cavalier and introduced its eventual replacement, the Cobalt. Unfortunately, for the Cobalt, it was nowhere near as successful as its predecessor, as Chevy discontinued it after just six m…

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How to Convert a ‘93 RX-7 Auto to Manual Transmission

Flywheels deliver torque to manual transmissions.Converting an automatic transmission to a manual on a ‘93 Mazda RX-7 requires a strong background in mechanics. The quality of the transmission conversion depends upon the skill of the mechanic. You need many parts to convert the transmission, and yo…

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Defrosting a Gas Cap

Defrosting a gas cap is something people might not think of, but its very important in the winter time. Learn about defrosting a gas cap with help from an expert in the automotive industry in this free video clip.

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What Do the Exhaust Valves Do on 2-Strokes?

While the two-stroke combustion cycle requires a different engine setup compared to the more common four-stroke engine, the function of the intake and exhaust valves remains the same. To generate power, the cylinders have to be filled with an air-fue…

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How to Replace a Schlage Key Plug

A key cylinder in a Schlage lock that is difficult to turn is most likely in need of a replacement key plug. The key plug is the portion of the Schlage lock that is the keyhole and contains the bottom pins for keying. It is possible to change out the…

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How to Replace the Key to a Yamaha V Star 650

As delivered from the dealership, a Yamaha V Star 650 is provided with a pair of ignition keys and a metal tag with a key code. The code allows the V Star’s owner to order a new set of keys matched to the motorcycle’s ignition switch in case they’re…

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The Accuracy of Vehicle Speedometers

Some speedometers are off by as much as 10 percent.Speedometers have a margin of error. Different types of speedometers are used in the automotive industry, and although the exact margin of error varies by type and manufacturer no option provides a 100 percent accurate speed reading at all times. Var…

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What Is Used to Regulate Valve & Ignition Timing in Internal Combustion Engines?

Getting an engine to run, much less run well, is no simple task. While any high-school auto-shop student can tell you how air and fuel gets into the cylinder, ignites and gets back out, the fact is that the techniques used today are the product of mo…

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