Re: 1973-1991 Dual fuel tank systems theory of operation
I have an '84 GMC K1500 that has a carburetor, mechanical fuel pump and dual tanks. Aux. tank has been disconnected (reason unknown).The PO removed all items related to EFI and emissions. It has the Pollak 6 port selector valve (which will be replaced with a new one) and Standard DS-1807 switch. All wiring and connectors are there.
Would there be any reason not to reconnect the auxiliary tank and use the new valve and switch? I also plan on installing an adjustable fuel pressure regulator with a return line back to the valve.
Any help is greatly appreciated.
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