System 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 and lower chamber. See Fig 1 .
- Disconnect differential pressure regulator connector from side of regulator. Remove fuel pump relay. Jumper fuel pump relay socket. Open valve on pressure gauge.
- Energize fuel pump. Note pressure reading on pressure gauge. Pressure should be between. 88-94 psi (6.2-6.6 kg/cm2 ). System pressure is not adjustable.