Fuel System Problems
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Joined: Sep 2007
Posts: 17
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From: Oklahoma
Fuel System Problems
We have a 1989 F150 4.9 with dual fuel tanks giving us some problems. It all started a few years ago when the pump in the front tank went out, my dad replaced it with a new pump but it went out after just two weeks, so he put another in lasted two days, instead of replacing it a third time he just switched it to the rear tank and forgot about it, now every once and a while you’ve got to siphon the fuel out of the front tank or it will overflow, the fuel gauge quit working, and the rear pump is starting to wine. I would like to get the front tank working but don’t know where to start. Hate to just replace the pump to find out if it will solve all the problems. Any advise would be great.
Scott
Scott
Fleet Owner
Joined: Aug 2005
Posts: 23,666
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From: Easton,Ks
There is not a check valve that stops the gas from filling up the front one.
Sounds like you have a bad selector valve on the frame and/or you may have a bad rear fuel pump.
The front pump may be OK.
Sounds like you have a bad selector valve on the frame and/or you may have a bad rear fuel pump.
The front pump may be OK.
Posting Guru
Joined: Aug 2007
Posts: 2,026
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From: Belle Mead NJ
Originally Posted by subford
There is not a check valve that stops the gas from filling up the front one.
Sounds like you have a bad selector valve on the frame and/or you may have a bad rear fuel pump.
The front pump may be OK.
Sounds like you have a bad selector valve on the frame and/or you may have a bad rear fuel pump.
The front pump may be OK.
