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The average cost for a fuel injector replacement is between $231 to $342. Labor costs are estimated between $168 to $213 while parts are priced between $63 to $129. Get a personalized estimate based on your location and specific car.
Remove also the vacuum hose from the fuel pressure regulator. 4. The fuel injector 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 of the fuel injector.Now, remove the mounting bolts that keep the fuel rail in its place, so that the rail can be detached easily with injectors still on. 5.ry to follow the below mentioned steps to replace the fuel injector in your Nissan Sentra. 1. Initially, youâll need to find out the new injector that is built particularly for your Sentra. The specification of a fuel injector would differ not only according to the make and model, but also according to the engine size.