why does front fuel tank leak gas?

50

Asked by Sep 10, 2014 at 04:17 PM about the 1986 Ford F-150 XLT Standard Cab SB

Question type: Maintenance & Repair

i have a 1986 f-150 xlt lariat  after driving a few miles ive noticed leaking of gas from the
front tank if i open the gas cap gas and air shoot out about 1/2 a gallon  ive noticed a
small crack in the tank  i use the rear tank which is all newly replaced but fuel is alwas
being sent to the front. what to do?

3 Answers

50

also i see a crack on the back of the nozzle that also makes the gas leak which looks like an easy fix but isnt all of my problem

5 people found this helpful.
10

Did you find the fix to this problem? My 1986 F150 has the same problem. I've owned the truck for many years, but I don't drive it much and keep it in the garage. It just has 150K miles. Problem first started when I noticed a vacuum release with the front tank when I removed the cap to fill, now tank pressure is so much that gas blows by the new cap. I want to know how to fix this dangerous problem.

1 people found this helpful.

I have 1978 ford f150 that has a hole near the top and to the right of the fuel sending unit if you're looking from the front of the vehicle. The hole presses against a pad on the frame or the pad was on the tank and has now stuck to the frame. It appear that when I reinstall the tank it will seal off. Does anyone have any knowledge about this design and can verify that my idea is accurate?

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