You can start checking on the status of your return within 24 hours after we have received your electronically filed tax return or 4 weeks after you mail a paper tax return. Q7: How often does Whereâs My Refund? update? Whereâs My Refund? updates are made no more than once per day, usually at night.
How Piezo Injectors Work. The heart of a Piezo (short for piezoelectric) injector is the piezo crystal. When electricity is applied to the crystal, it rapidly expands, thus making it suitable to act as the actuator in a diesel fuel injector.ressurized fuel is delivered to the top of this needle as well, the force of which keeps the needle closed. When the piezo crystal is energized, a valve at the top of the needle opens, allowing the pressurized fuel at the top of the needle to return to the tank through the return line.
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.