How to Replace a Fuel Injector

Before you start the technique of replacing a fuel injector or fuel injection rail, you need to think about safety. Always keep fire safety in mind when you are working with fuel. You also need to be sure you are wearing eye protection. Even if you have released the pressure in the fuel injection technique, there could be some fuel flying when you start disconnecting high pressure lines and removing injectors.

Starting Out:

Be sure to follow the procedure for relieving the fuel system pressure. Very important!
Look over your car's injection system. Some systems are easily accessible and others are practically buried. Plan your attack so your job can be organized
It's a good idea to get a fuel injector puller if you are removing fuel injectors. There are other ways to do it, but you risk damaging expensive fuel injection components.

If your fuel injection system has a fuel rail to deliver fuel to the fuel injectors, you will ahve to remove this before you are able to remove the injectors. This is an easy job.

First, disconnect the main fuel line at the end of the rail. There may be an additional line at the other end, so remove that one, too. The fuel rail is help in place by screws or bolts, depending on your car's setup. Remove these screws or bolts. If your wiring travels over the top of the rail, see the next step to disconnect the wiring first. With everything disconnected from the rail, pull it away from the fuel injectors. Most fuel rails are just pressed onto the injector tops, once you've removed the hold down screws or bolts it should pull away, with a little oomph.

If your car uses a fuel rail to deliver fuel to the injectors, you removed it in the previous step. If you don't have a fuel rail, you'll need to remove a fuel line from the top of each injector. It's just as easy to remove, just do it carefully.

With the fuel delivery out of the way, you're ready to disconnect the fuel injectors. Each injector will have a plug at the top (or on the side near the top) that connects to the wiring harness. Most fuel injector wiring plugs are held securely in place by a springy wire (see pic). To remove this wire, just insert a flat head screwdriver in the space between the spring and the plug and pry it carefully away. It will come out easily. Don't lose it!

With all of the other stuff out of the way, you're ready to yank the injector. Unfortunately, many people really do try to yank them out. Remember, your fuel injectors sit right in the middle of the delicate are of the engine, so any piece you break off might fall in, and this equals big pain in your fanny.
The safest way to remove a fuel injector is to use a fuel injector puller. There are other ways to remove fuel injectors, but if you aren't careful you could damage some expensive fuel injection components. Besides, the injector puller makes it so easy, just slide it underneath the lip in the injector housing and pop the injector out.

Your fuel injector goes into what amounts to a hole in the intake manifold (or your head if you're lucky). When you remove the injector, you leave this hole open. Be very careful to keep anything from falling in. This can be a real chore to fix.

In the immortal words of every auto repair tutorial, installation is the reverse of removal! You'll require oiling the new injector seals before they go in, and keep in mind to go simple, don't force anything in.

tags: fuel injector diagnosis & cleaning equipment, fuel injector cleaner

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The Veins of Your Vehicle Taking Care of Fuel Injectors

As our surroundings continuous to deteriorate each day, it seems that every place they go is polluted. Pollution has become undesirable part of our lives and created numerous negative health effects. Like humans, your van is also subjected to dirty surroundings. As a result, its parts are clogged with dirt and undesirable materials, which will finally decrease performance and efficiency.

One of the most common mechanical issues your truck will encounter is clogged fuel injector. This problem is exhibited when your truck won’t start easily or runs in a very rough and rugged way. Other causes include overtime use and inactivity for long periods.

How Fuel Injectors work
When key ignition is activated, a small amount of fuel is spayed by fuel injectors in intake ports, where corresponding vaporization takes place; the resulting vapors are burned to produce energy for engine power. The injectors ensure that the sprayed fuels are extremely fine for an easier burn. Clearly, a problem develops whenever the injectors are incapable of spraying in an extremely fine form. This is attributed to dirt and foreign objects clogging the injectors. Another common problem is continuous fuel spray whenever the injectors do not completely close.

Problem Diagnosis
If your truck refuses to start, its injectors may be stucked and unable to spray fuel. Fuel injectors by RJ performance are guaranteed to perform effectively for longer periods and enables proper fuel spray.

On the other hand, if you can turn on the ignitions but runs ruggedly, the cause may be incorrect fuel and air mixture. The tiniest discrepancy in the mixture will create firing cycle problems.

Automotive advancement led to invention of computerized sensors that monitors unused oxygen. Whenever there is too much or too little fuel in the mixture, these sensors also adds sufficient amount of fuel to the cylinders to create an even mixture.

Where did that dirt come from?
Fuel companies boast cleanliness and purity of their petroleum products. Still, dust and dirt are able to enter your truck’s injection system. Fuel Filters by RJ performance will trap and remove all unwanted particles and impurities in your fuel.

Aside from dirt, injectors are also exposed to residues created by fuel evaporation on nozzles. These sticky residues can be removed by revving up your engine for several minutes. If that does not work, cleaning agents will do the job.

fuel injector diagnosis & cleaning equipment, fuel injector cleaner