X, Pull off electric plugs from control pressure regulator and auxiliary air regulator, so that parts will not run hot during the following tests.

2. Bridge electric safety circuit, a) Remove cover in footwell on front passenger's side.

Stretched Porsche 928

3. Position selector lever at 2. Let pressure gauge hang down (stretched hose) . Move selector lever to position 3 about 5 times at intervals of 10 seconds.

Electrique Wiring Porsche 928 1979

c) Bridge terminals 30 and 87 with a piece of wire. Fuel pump or pumps must now run.

Porsche 928 Pff

b) Pull off fuel pump relay

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