Fuel Pressure Regulator Valve -N276-, Removing And Installing: Installing

WARNING: This page is about a different car, the 2015 Audi A7 Quattro and 2014 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Install in reverse order of removal. Note the following:

NOTE:

The Fuel Pressure Regulator Valve -N276- does not have sealing ring, but rather a biting edge and therefore cannot be used again.

Check the new Fuel Pressure Regulator Valve -N276- for damage to biting edge and thread.

Check the sealing surface on the hole inside the fuel rail.

Coat the biting edge of the threaded insert and the O-ring for the Fuel Pressure Regulator Valve -N276- with diesel fuel.

-- Align the Fuel Pressure Regulator Valve -N276- so that connecting the connector -arrow- does not cause the electrical wiring to be placed under tension.

Fig 1: Fuel Pressure Regulator Valve -N276-

Courtesy of AUDI OF AMERICA, LLC

-- Counterhold the housing hex bolt to tighten regulator valve tightening union nut in four stages as follows:

-- Replace gaskets on fuel return line banjo bolts and tighten to 25 Nm.

Perform an adaptation after replacing the high pressure pump and / or the Fuel Pressure Regulator Valve -N276-. Use a Vehicle Diagnostic Tester.

NOTE:

If there is still air in the fuel system, the engine may switch to emergency mode during the road test. Turn off the engine and erase the Diagnostic Trouble Code (DTC) memory. Then continue the road test.

-- Check the DTC memory after the road test.