Residual Pressure
- Connect Pressure Gauge (VW 1318) as previously described. See Figure . Open pressure gauge valve. Operate fuel pump for at least 30 seconds.
- Shut off fuel pump. Note system pressure. Pressure should be 51 psi (3.6 kg/cm2 ) after 10 minutes and 49 psi (3.4 kg/cm2 ) after 20 minutes.
NOTE:
Residual Pressure Test does not include cold start valve. To check cold start valve, reattach fuel line. Operate fuel pump. Visually check for leaks.