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.
If you're removing all the injectors, just remove them as a unit. If you wish to disconnect the fuel return line or a single injector, release the return line by pulling the center part up to release a tab while counterholding the side tabs down.Note the copper o-ring at the botom.emove the allen head injector surround cover bolts and rotate them to the side. Remove the 2x 10mm nuts holding the fuel injector clamps. The injector is now loose. The sevice manual says you have to use a slide hammer where the fuel injector lines were attached but mine just came out with a gentle tug.