Truck will not start on rear fuel tank

CATTLECLERK

MEMBER
FORD F-250

1992 F250 460 EFI 135000 miles.
I started my truck and drove to town and shut my truck off. When I returned to my truck and tried to start it, it would only turn over but not start on the rear tank, however when I switched to the front tank the truck started right up. When I tried to switch back to the rear tank it died INSTANTLY.
it runs great on the front tank and will not run at all on the rear tank. Help?

4 Replies

CATCH_15

MECHANIC
250 POSTS

Check to see if the fuel pump is running in the rear tank. If that doesn't work, check the fuel pump relay. Also, the switch may be bad.

Was this

answer

helpful?

Yes

No

Thursday, November 16th, 2006 AT 2:35 PM

CATTLECLERK

MEMBER
10 POSTS

Where would I find the relay?
Is there by any chance a manual valve for tank switching?

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Friday, November 17th, 2006 AT 8:12 AM

BAREFOOTBOB88

MEMBER
60 POSTS

Usually the fuel pump relay is found on the driver side fender when under the hood. Both front and rear pump relays clip into a plastic cover that bolts onto a bracket on the well. If it's not on the drivers side look on the passenger wheel well. Now for switching the tank there's an electric valve that is controlled by your tank switch. Usually you can hear the switch work with the truck not running.

Was this

answer

helpful?

Yes

No

Saturday, November 18th, 2006 AT 8:09 PM

CATTLECLERK

MEMBER
10 POSTS

Thankyou very much for the help!
It was indeed the switch, however the switch was not bad, just a bad connection at the switch plug-in.
Thankyou again!

Was this

answer

helpful?

Yes

No

Monday, November 20th, 2006 AT 8:32 PM