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Element Replaces
How to Replace a Fuel Injector in Nissan Sentra by John Taps
Fuel injector replacement on Nissan Sentra is quite necessary at times, to avoid unnecessary damages to the engine. Fuel injection nozzle that helps in blending the fuel and air appropriately, by spraying the fuel in measured quantity, may lose its ability, if it gets clogged by the dust particles. The powerful engine might prove inefficient under such circumstances, and all you can do is replace it with a new one. But when opting for a replacement, you should follow a procedural way to make things easier. Make sure you have plenty of tools and a replacement kit besides you, to ensure that the replacement process doesn't cost you extra. Try to follow the below mentioned steps to replace the injector in your Nissan Sentra.
1. Initially, you'll need to find out the new injector that is built particularly for your Sentra. It's specification would differ not only according to the make and model, but also according to the engine size. Sentra models have different sized engines ranging from 1.4L to 2.5L, so choose only the one based on the engine fitted in your car.
2. Once you have identified that, it's time for a removal procedure. For this, you'll require a socket wrench set, a torque wrench and a replacement kit to avoid damaging other parts while replacing.
3. First of all, remove the negative cable from the battery. It is also required to relieve the pressure from the fuel supply system. This can be done by removing the fuel pump fuse or relay, while the engine is in running condition. The engine will die out soon, consuming all the pressure inside the system. Remove also the vacuum hose from the fuel pressure regulator.
4. The fuel injecting fragment is connected using fuel rail and fuel hoses attached to it. Using a socket wrench, remove the fuel hoses from the rail, and also disconnect the electrical connectors. Now, remove the mounting bolts that keep the fuel rail in its place, so that the rail can be detached easily.
5. After disconnecting the fuel rail from the intake manifold, force the injector tail slightly, so that they can be removed easily. Make sure that, you discard the O-rings that came out along with it.
6. Replace the damaged injecting element with the new one, which would have also been included with new O-rings. Lubricate these rings with small portion of motor oil and re-insert the it on the fuel rail.
7. Connect the fuel rail with the intake manifold, and tighten the mounting bolts using torque wrench. Connect the fuel hoses and the electrical connectors too.
8. When you're done with these steps, connect the battery cable back to the negative terminal and start the engine. As the vehicle starts, it suggests that the pressure inside the system has been regained.
About the Author
John is a passionate auto expert aiming towards keeping the auto repairs simple and effective at no extra cost. He is sharing his best knowledge on nissan sentra fuel injector replacements.
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