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Problem Starting Car

                            

How Ignition Systems Work

The Basics Of A Car Engine

In order to understand how your vehicle’s ignition system works we need to review the basics of internal combustion.

Basically, a car engine is like a large pump. Air and gas are being pumped in and exhaust is being pumped out. There is a by-product of excess energy that is being sent to the wheels and exhaust (which exits through the tailpipe). Your car’s engine combines the air and the fuel, and adds a spark. The spark ignites the air and fuel mixture to cause an explosion. This is what we refer to as ignition.

The ignition system is a group of components that work in tandem to create the ignition. The ignition system contains an ignition coil, a distributor, a distributor cap, a rotor, plug wires and spark plugs. Older ignition systems use what is called a “points-and-condenser system” in the distributor. Current ignition systems like the one your car most likely contains uses an ECU. An ECU or an engine control unit controls the spark and ignition timing.

Well take this apart piece by piece so it all makes sense.

1. Ignition Coil

The ignition coil takes the weak battery power and turns it into a spark that is powerful enough to ignite your fuel’s vapor. There are two coils of while in the ignition coil and they are right on top of each other called windings. The windings are differentiated as primary and secondary. The primary winding gathers the power to create a spark. The secondary winding sends it to the distributor.

There are three contacts on an ignition coil. If the ignition coil has an external plug, then the contacts are on the inside of the case. The large and obvious contact in the middle of the ignition coil is where the coil wire goes. The coil wire is the wire that links the ignition coil to the distributor cap. The second contact is a 12V wire that connects into a positive power source. The third contact sends information to the rest of the vehicle such as the tachometer.

2. The Distributor, Distributor Cap, and Rotor

As we mentioned above, your ignition coil links to the distributor via a coil wire. The distributor receives that powerful spark and sends it out to the spark plugs.

The distributor is a very precise spinner. It spins distributing the sparks to each of the spark plugs at the right time. The rotor, which is actually connected directly to the shaft of the distributor, is the mechanism that distributes the sparks. Since it’s connected to the distributor, the rotor also spins and makes contact with a number of points that correspond to the number of cylinders your engine has. Then, it sends the spark through the point to the plug wire located on the other end. Modern distributors use electronic assistance that is able to alter the ignition’s timing.

3. Spark Plugs & Wires

As we mentioned above, once the ignition coil creates the high-powered spark, the distributor and rotor takes that spark and spins it to the right outlet. However, we still need a way to transport that spark to the spark plug. This is done using spark plug wires.

The contact points on the distributor cap connect to a plug wire that takes the spark to the spark plugs. Spark plugs are screwed to the head of the cylinder.Click here and get BIG discounts plus FREE SHIPPING on auto parts and accessories at Auto Parts Warehouse .You can find some more Great prices and Wide Selection of Auto Parts and Accessories at AutoPartsGiant.com auto parts and accessories.

             

The end of the spark plug is located at the top of the cylinder and that’s where the action happens. Once the intake valve lets out just the right amount of fuel vapor and air in the cylinder, the spark plug creates a blue hot spark that ignites the mixture. This is what causes combustion. The ignition system does this thousands of times per minute.

4. The Ignition Module

Through an old system called “a points-and-condenser system”, a distributor relied on many of its own mechanics to time the spark at just the right time. The ignition points were set to a specific gap, which created the proper amount of spark while the condenser did the regulating.

Nowadays, all of this is handled by computers. This computer is called an ignition module. If it malfunctions, all you can do is replace it since it cannot be repaired.

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07/09/2011 Posted by | Uncategorized | , , , , , , , , | Comments Off on Problem Starting Car

Fuel Injection Problems

                     

 What is fuel – injection?

The advertisements on television talk about fuel – injection as if everyone knows exactly what the term means. But not everyone is a car mechanic even if they do recognize the term. So the first question is: What is fuel – injection? The second question is: Why should you care about keeping it running smoothly?

Obviously, by the name, you can tell a fuel – injection system handles getting fuel to the car engine. Despite being discussed as if it is a fairly new invention, it’s actually been in existence since the 1950s. The fuel – injection system was designed to address the need for fewer polluting emissions from cars and to supply fuel to the engine in a more efficient manner.

Going Modern

Fuel injection replaced the old-style carburetors and is combined with a catalytic converter where there are strict air quality standards. The catalytic converter changes dangerous emissions into harmless water vapor and carbon dioxide. But in order to accomplish this goal, the fuel must be supplied to the catalytic converter in the right mixture and amount.

Thus the fuel – injection system was born, and Mobile Car Care mechanics are thoroughly trained on both old and new styles. The fuel – injection system supplies the right air and fuel ratio to the engine. If a catalytic converter is on the car, the car emissions are rendered virtually harmless. But a catalytic converter is not required for the fuel – injection system to work properly.

There are two types of fuel – injection systems on the market now. The multipoint fuel – injection system has one fuel injector per cylinder. They are mounted on the intake manifold and use ignition voltage for operational power. There is a control module which contains a switch which turns the power on and off as the cylinders need fuel. Fuel is sprayed as needed to keep the engine running smoothly.

The second type of fuel – injection system is called a throttle body injection system. As the name suggest, fuel injector(s) are installed on the throttle body. The fuel is sprayed, mixes with the air, and then delivered to the cylinders by the intake manifold. This is a less efficient system and in areas where strict air emission control standards were put into place, the throttle body injection system was replaced by the multiport fuel – injection system during vehicle manufacturing.

Lifetime of Service

It is clear the fuel – injection – system plays an important role in the efficient operation of the vehicle. Most people are not qualified nor have the right diagnostic tools to test and maintain a fuel -injection system. Yet it is critical to keep your fuel – injection – systems working efficiently for the benefit of the engine and to meet air emission standards.

Maintenance of the fuel – injection system can prevent many problems from developing.

* Change the fuel filter periodically
* Clean fuel injectors
* Fuel flow testing
* Spray pattern testing

The Mobile Car Care vans are equipped with the necessary diagnostic equipment perform all necessary fuel – injection system maintenance operations. With some basic and regular maintenance, most fuel – injection systems last for the life of the vehicle.

The most important step you can take is to let a trained professional mechanic perform routine maintenance.

The bottom line is this: it costs a lot less to maintain your vehicle than to replace it.

07/09/2011 Posted by | Uncategorized | , , , , , , | Comments Off on Fuel Injection Problems

   

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