Intake Manifold, Lower Section, With Fuel Rail: Installing

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Installation is in reverse order of removal, Note The Following:

NOTE:

Replace Seals And O-Rings.

Lubricate The Fuel Injector O-Rings Lightly With Clean Engine Oil.

The intake manifold flaps must be moved in direction of -arrow- when installing the intake manifold lower section.

Fig 1: Identifying Intake Manifold Flaps

Courtesy of AUDI OF AMERICA, LLC

-- Connect the Hand Vacuum Pump:VAS 6213 to the vacuum diaphragm connection for the intake manifold flaps.

Fig 2: Identifying VAS 6213 Connected To Vacuum Diaphragm Connection For Intake Manifold Flaps

Courtesy of AUDI OF AMERICA, LLC

-- Generate vacuum using hand vacuum pump.

The intake flaps are opened.

NOTE:

If The Intake Flaps Are Not Opened, They Could Have Seized When Installing The Lower Section Of The Intake Manifold In The Cylinder Head.

-- Push the intake manifold lower section evenly onto the injection valves.

-- Tighten the bolts on the intake manifold lower section diagonally.

Intake manifold Tightening Specification. Refer to PLASTIC INTAKE MANIFOLD, FROM MY 2009 ASSEMBLY OVERVIEW

-- Remove the hand vacuum pump from the connection on the vacuum diaphragm for the intake manifold flaps.

-- Counterhold the threaded connection and tighten the fuel high pressure line union nut on the high pressure pump.

-- Tighten the union nut -3- while counterholding the threaded connection.

Fig 3: Identifying Intake Manifold Lower Section

Courtesy of AUDI OF AMERICA, LLC

Tightening Specifications High pressure pump. Refer to HIGH PRESSURE PUMP ASSEMBLY OVERVIEW

-- Make sure the high pressure line is free of tension.