System Pressure
- Relieve fuel pressure. Remove fuel line from cold start valve. See Fig 1
. Remove test plug from distributor lower chamber.
- Connect Pressure Gauge (VW 1318) between fuel line from cold start valve to lower chamber. See Fig 1
. Disconnect differential pressure regulator harness connector. Remove fuel pump relay.
- Jump fuel pump relay socket. Open valve on pressure gauge. Energize fuel pump. Note and record pressure reading on pressure gauge. Pressure should be 88-94 psi (6.2-6.6 kg/cm2
). System pressure is not adjustable.
Courtesy of AUDI OF AMERICA, INC.