Test sequence

WARNING: This page is about a different car, the 2005 Audi allroad, 2004 Audi allroad, and 2003 Audi allroad. However, it is still accessible from the selected car via links, so may be relevant.

Switch ignition off.
Pull fuel pump fuse out of plug-in socket "28".

Fig 1: Identifying Fuel Holder
Courtesy of AUDI OF AMERICA, INC.
Remove rear engine cover (arrows).

Fig 2: Removing Rear Engine Cover
Courtesy of AUDI OF AMERICA, INC.
Remove front engine cover (arrows -1- and -2-).

Fig 3: Removing Front Engine Cover
Courtesy of AUDI OF AMERICA, INC.
Remove bolts (arrows) and coolant expansion tank -2-.
Disconnect wire to engine coolant level (ECL) warning switch -F66- and lay aside coolant expansion tank with coolant hoses -1- and -3- connected.

Fig 4: Locating Bolts Of Coolant Expansion Tank
Courtesy of AUDI OF AMERICA, INC.
Remove power steering reservoir cover (arrow).

Fig 5: Removing Power Steering Reservoir Cover
Courtesy of AUDI OF AMERICA, INC.
Remove bolt (arrow) at dipstick guide tube.
NOTE: Leave guide tube inserted in upper part of oil pan.

Fig 6: Locating Bolt At Dipstick Guide Tube
Courtesy of AUDI OF AMERICA, INC.
Remove air cleaner cover -2-. See Fig 7.
Remove air duct -1-.
NOTE: Pull out clips (arrows) using pry lever 80-200.

Fig 7: Removing Air Duct
Courtesy of AUDI OF AMERICA, INC.
Disconnect connector -3- at evaporative emission (EVAP) canister purge regulator valve -N80- item -2-. See Fig 8.
Detach solenoid valve from holder.
Disconnect connector -4- at mass air flow sensor. See Fig 8.
Turn hose -1- to secondary air pump counter-clockwise and detach.
Detach air hose -5- at mass air flow sensor. See Fig 8.
Screw out bolt (arrow). See Fig 8.
Take out air cleaner housing with mass air flow sensor.

Fig 8: Removing Air Cleaner Housing With Mass Air Flow Sensor
Courtesy of AUDI OF AMERICA, INC.
Remove bolts -5- and -6- at left cylinder head. See Fig 9.
Disconnect connectors -1- to -4-.
Pull out ignition coils (arrows).
NOTE: Special tool T10094 can be used for removal.

Fig 9: Removing Ignition Coils From Left Cylinder Head
Courtesy of AUDI OF AMERICA, INC.
Remove bolts -5- and -6- at right cylinder head. See Fig 10.
Unplug connectors -1- to -4-.
Pull out ignition coils (arrows).
NOTE: Special tool T10094 can be used for removal.

Fig 10: Removing Ignition Coils From Right Cylinder Head
Courtesy of AUDI OF AMERICA, INC.
Use spark plug wrench 3122B to remove spark plugs.
Fully open throttle valve.
Use compression tester V.A.G 1763 to check compression pressure.
NOTE: How to use tester: See operating instructions.
Operate starter until no further increase in pressure is indicated by tester.