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1973-1991 Dual fuel tank systems theory of operation

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08-09-2018, 09:44 PM	#11
v30crewcab Registered User Join Date: Apr 2012 Location: Chatt Tn Posts: 1,022	Re: 1973-1991 Dual fuel tank systems theory of operation 91 tbi truck, took out fuel pumps, and hard tubed it for a diesel swap. I'm getting power to the switching valve, but I think I've lost the ground due to unplugging the fuel pumps, am I correct? whats the simplest way to convert the tbi setup for a diesel setup? do I just need to ground the two wires that were originally power for the fuel pump? or do I need to hook the two together? factory wiring diagrams leave out alot! __________________ 88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535

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