Audi Workshop Service and Repair Manuals

Note:

Follow procedure on Page 24-4.

• Air guides
• ◆ Removable
• ◆ Check for damage and correct attachment
• Sleeve
• ◆ May remain lodged in cylinder head when high-pressure pump is removed; removable
• O-ring
• ◆ Replace
• Mechanical single-plunger high-pressure pump with fuel-pressure regulating valve -N276
• ◆ To remove, coolant pipe (Item 10) must first be disconnected

• Connection for fuel return line to fuel tank
• ◆ Not pressurised
• High-pressure connection to fuel rail
• ◆ Maximum 110 bar approx.
• Connection for fuel supply line from fuel tank
• ◆ An electric fuel pump which supplies fuel to mechanical high-pressure pump at pressure of approx. 6 bar is fitted in fuel tank.

• Leak connection
• ◆ Not pressurised
• Securing bolts for high-pressure pump, 9 Nm
• Coolant pipe
• ◆ To remove high-pressure pump, coolant pipe must first be disconnected (see Engine Mechanics)
• Installation position of injectors after removal of fuel rail