Test sequence

WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Jetta, 1996 Volkswagen Passat, and 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect fuel cut-off valve on Diesel injection pump.
Disconnect harness connector for quantity adjuster on Diesel injection pump.
Remove all glow plugs using 3220 hinged socket.
Install VAG1323/12 adapter in place of glow plugs.
Check compression using US1110 compression tester.
NOTE: For compression tester usage, see manufacturers operating instructions.
Operate starter until tester shows no further pressure increase.
Compression pressures:
- New: 25 to 31 bar (363-450 psi)
- Wear limit: 19 bar (276 psi)

Permissible difference between all cylinders: 5 bar (73 psi)

Install glow plugs using 3220 hinged socket.
Tightening torque: 15 Nm (11 ft lb)
Check DTC memory.

See CHECK DTC MEMORY (SCAN TOOL FUNCTION 02)

NOTE: A Diagnostic Trouble Code (DTC) will be generated as a result of disconnecting injection pump harness connector. Check and erase DTC memory to clear the DTC.