1993 F150 fuel pump question - Diesel Forum

roakey · 07-12-2001, 01:12 PM

Mind if I place a question on a non-superduty here in case someone knows the answer?

Last night I replaced my mid-ship tank fuel pump in my 1993 F150.

However, it appears that I had a blonde moment. On the old pump their appeared to be an extension on the outlet side of the pump (not the return) between the pump “pipe” and the braided fuel line (maybe a 2” link, just big enough for another clip to hold the connection together). The new pump had a slightly longer pipe so I skipped putting the “extension” on and directly attached the fuel line to the pump pipe.

After putting everything back together I finally engaged my brain and went back and looked at the extension. It’s not simply an extension since I can’t see light through it and if I had to hazard a guess, I’d say it was a check valve, which has me confused since there’s a check valve already in the pump.

I’ve looked through my Ford shop manuals for the truck as well as my Chilton’s manual and I don’t see any picture showing anything between the fuel pump pipe and the fuel line and I see no reference to such a part in the text anywhere.

Everything seems to be working fine, no transfilling going on between the two tanks for example.

Anyone have any idea what this part is? Perhaps it was a part required by the old design of pump that’s no longer required?

Any help would be appreciated.

Roak

Ps. If it'd help, I can post a picture.

MECHANIC88115 · 07-12-2001, 02:03 PM

If it works fine and does not affect you millage then don't worry about it. I have replaced a bunch of those pumps and some had that part and some did not. I always put it back if it had it, but I did not know what it was for. The fuel tanks can not transfill unless the change over goes out. That is the large black canister on the driver side inside frame just infront of the front fuel tank. Hope this helps, Mason.

mlucas · 07-12-2001, 02:57 PM

I have replaced both tank pumps in my 86 5.0, and niether had this device. I woun't worry about it, it would suck to drop that tank again!

roakey · 07-12-2001, 04:09 PM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by mlucas:
I woun't worry about it, it would suck to drop that tank again!<HR></BLOCKQUOTE>

Actually using the web I found a great piece of advice -- I took the bed off rather than dropping the tank. Worked great!

Thanks for the feedback, I'll just sit tight and not throw the part away quite yet.

Roak