Why does the gas nozzle keep shutting off while putting gas in an 89 Ford F150?


Asked by Jan 25, 2016 at 06:29 PM about the 1989 Ford F-150 XL Standard Cab SB

Question type: General

I can only put a few cents at a time in the gas tank. It keeps clicking off.

4 Answers


The gas tank vent system is plugged up. It could be the hose or the charcoal canister. This diagram might help ---

2 out of 2 people think this is helpful.

The pump is shutting off because it detects back pressure, as if the tank is full. Back the nozzle out just a little and try filling at a slower rate. Also, visually check the condition of the fuel tank. I've seen newer newer F-150 collapse the fuel tank when the purge valve becomes defective and implodes the tank during vacuum testing.


I agree with both experts but lean more towards first answer. In the meantime manually pull the nozzle safety back and see if gas goes in, if it does, u have an issue with vent system, it it still doesn't then u have a restriction in the fuel tank hose


I have seen this happen on a car that someone tried ti siphon affelsgas and bent the baffles the hindered the flow on filling.

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