How to Replace Fuel Injector in Nissan 350Z

Nissan 350Z was a famous car model that represented a sports car, which was marketed by Nissan from 2002 to 2009. The engine used in 350Z was implemented with a direct injection technology, which helped to maintain a powerful performance with improved fuel efficiency. The fuel injector in such type of engine technology is placed 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 MPFI system. But this improved version of injection system also becomes ineffective, if the fuel injector is damaged or clogged. Since the injector is restricted from spraying required quantity of fuel, it will directly affect the engine performance with the engine running sluggishly. Making your move towards a fuel injector replacement on 350Z, should also require you to keep the replacement clean, without any extra cost or damage. To make sure that the fuel injector 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 the injector with the one that doesn’t fit the engine requirements. The 350Z model manufactured from 2002 to 2006 was implemented with a VQ35DE 3.5L engine. While the Coupe and Roadster versions of 350Z manufactured in 2007 and 2008 were built with VQ35HR engine. Know which engine is fitted in your 350Z and based on the engine, buy a new injector.

2. The next step is to remove the old, damaged injector using socket wrench set and fuel injector replacement kit that would help you to remove the injector 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 of the fuel injector. Before removing the hoses, do not forget to remove the pressure inside the fuel system by removing the fuel pump fuse or relay, while the engine is turned 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 with the injectors still attached to it.

4. It simply requires a small push to remove the injectors from the rail. Once they get removed, remove 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 and start the engine. The pressure will get back to normal inside the system once the engine is started.