Fuel Pressure (VANAGON)

Install Fuel Pressure Gauge (VW 1318) at fuel supply hose 3-way "T" connector. See Fig 1 . Using a jumper wire, connect terminals No. 30 and 87 on fuel pump relay. Turn ignition on.
With fuel pump operating, minimum pressure should be 33 psi (2.2 bar). If fuel pressure is incorrect, inspect for restricted fuel lines, defective fuel pump or weak control pressure regulator. If okay, perform FUEL VOLUME CHECK.

Fig 1: Fuel Pump Testing Arrangement (Vanagon)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

REGULATED FUEL PRESSURE

Application

psi (bar): Engine Off ⁽¹⁾

psi (bar): At Idle

Cabriolet & Fox

28 (2.6)

68-78 (4.7-5.4)

Golf, Golf GT, Jetta

29-36 (2.0-2.5)

75-82 (5.2-5.6)

Vanagon

29-36 (2.0-2.5)

⁽²⁾ 33 (2.2)

⁽¹⁾	After checking fuel pressure at idle, turn ignition switch to the "OFF" position.

⁽²⁾	With pressure regulator vacuum hose disconnected, pressure should be 36 psi (2.5 bar).