Audi Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Compression tester V.A.G 1381 or V.A.G 1763
• ◆ Spark plug spanner 3122 B

Test requirements

• ● Engine oil temperature not less than 30 °C

Test sequence

• ‒ → Remove engine cover panels -arrows-.

• ‒ → With the ignition switched off, unscrew and/or unclip connectors and earth wire -arrows- on ignition coil with output stage.
• ‒ Unplug connectors from all injectors
• ‒ Remove spark plugs with spark plug spanner 3122B.
• ‒ Fully open throttle valve.
• ‒ Check compressions with compression tester V.A.G 1381 or V.A.G 1763.

Note:

Using the compression tester

=> Operating instructions

• ‒ Operate starter until tester shows no further pressure increase.

Compression pressure:

• ‒ Fit spark plugs and ignition coil with output stage.
• ‒ Interrogate fault memory:

=> Motronic injection and ignition system (4-cylinder); Repair group 01; Self-diagnosis of Motronic system; Interrogating and erasing fault memory

=> Motronic injection and ignition system (4-cylinder)07.96 ä;Repair group 01; Self-diagnosis; Interrogating and erasing fault memory

Note:

Faults will have been recorded in the fault memory because the connectors have been unplugged. Interrogate and, if necessary, erase fault memory after completing the test.

Tightening torques