How to Replace Fuel Injector in Nissan 350Z

Nissan 350Z was a famous car model representing a sports car, and marketed by Nissan from 2002 to 2009. The engine used in 350Z implements with a direct injection technology, which helped to keep up a powerful performance with improved fuel efficiency. The fuel injector, in such type of engine technology, places directly inside the combustion chamber, rather than the intake manifold. This modification helps to improve the fuel efficiency by reducing the throttling losses, when compared to an ordinary M.P.F.I. system. But, this improved version of injection system will also become ineffective, if the fuel injector gets damaged or clogged. Since it gets restricted from spraying required measure of fuel, it will directly affect the engine performance, causing it to run sluggishly. Making your move towards its replacement on 350Z would also need you to keep the replacement clean, without any extra cost or damage. To make sure, that this replacement remains effective in your Nissan 350Z, follow these easy steps-

1. Choosing the right injector for your 350Z is highly important; otherwise it makes no sense in replacing it with the one that does not fit the engine requirements. The 350Z model manufactured from 2002 to 2006 carried a “VQ35DE” 3.5L engine. While, the Coupe and Roadster of 350Z, manufactured in 2007 and 2008, included a “VQ35HR” engine. Know which engine fits in your 350Z and based on the engine, buy a new injector.

2. The next is to remove the old and damaged injecting element, using a socket wrench set and a replacement kit, which would help you to remove the element easily from its place. For this, you will need to disconnect the battery negative terminal first, and later, remove the fuel hoses from the fuel and the electrical connectors. Before removing the hoses, do not forget to remove the pressure inside the fuel system by removing the fuel pump fuse or relay, with an engine ON.

3. Disconnect the vacuum hose from the fuel pressure regulator. Now, disconnect the fuel rail using socket wrench to remove the mounting bolts. This will cause the fuel rail to get detached from the engine.

4. It simply requires a small push to remove these injecting fragments from the rail. Once they get removed, remove also the O-rings from them and do not use these rings again.

5. Install the new fuel injector to the fuel rail with new O-ring, and connect the fuel rail back to the engine. Connect the fuel hoses and the battery cable to complete the installation process.

6. Connect the vacuum hose to the pressure regulator, and also connect the fuel pump fuse or relay back to its place. Finally start the engine. This will cause the pressure to get back to normal inside the system.

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