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Auxiliary Fuel Tank Control <--> [Fuel Tank Selector Switch] > < Recall 88V016000: Fuel Tank Fill Pipe Defect

G 20 Van V8-379 6.2L DSL (1987)

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Fuel Tank Pressure Release Valve: Service and Repair

    Attach a short length of vacuum hose to valve inlet tube (fuel tank line connection) and blow into hose. The valve diaphragm should open and allow
air to pass through valve. If not, replace valve assembly.

Auxiliary Fuel Tank Control <--> [Fuel Tank Selector Switch] > < Recall 88V016000: Fuel Tank Fill Pipe Defect