EFI Fuel Flow diagrams for single and dual tank systems 1984 to…

'84-96 fullsize Ford truck EFI Fuel Flow
IF THE IMAGE IS TOO SMALL, click it.

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Blue is high pressure; gray is low pressure. Supply lines are 3/8"; returns are 5/16". Most '94-96 have a resonator between the filter & the manifold, per this TSB:


Most '94-96 with dual tanks have an integral check valve on the high-pressure line at the tank; many '90-94 with dual tanks have a retrofit check valve in that location per this recall:

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For '90-04 dual-tank trucks that exhibit fuel transfer, replace the FDM in the tank that RECEIVES fuel. The 2nd-best FDM is the made-in-USA (NOT Brazil) Bosch 67000 (all '90-96 front tanks & Bronco) or 67003 (all '90-96 rear tanks).



'87-96 fuel filter Motorcraft FG872 long nipples work with both styles of quick-connect
'87-91 (short nipple) Motorcraft FG800A plastic duckbill quick-connects ONLY
Not all '84-86 will have a reservoir or an external filter.

For '90-96 trucks, continue reading the captions in this album by clicking NEXT near the top Left corner of the page. For '87-89 trucks, read the captions at this link:



See also:
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Owner caption October 2012 · Photo 4780 of 5000