Reserve fuel tank

1991 FORD F-250

80,000 MILES • 4.5L • V8 • 4WD • MANUAL

GEORGEHOLT

MEMBER
2 POSTS

i am replacing the pump and forgot which if fuel line in and return how do i tell please?

Jun 23, 2019 at 4:15 PM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

The easiest way to tell the supply line from the return line is the supply line has the filter on it. So just follow the filter back and that is the supply line.

Here is a guide that will help with replacing this pump in case you need:

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Also, I am attaching the info on the filter as well.

Please let us know what you find and if you have questions.

Thanks

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jan 21, 2022 at 2:39 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.