What caused it? Fuel system question.

[Mudeprived]

I was replacing my filter today and got sprayed in the face/eyes. I am trying to figure out what caused it to happen.

I removed the gas cap and pulled the fuses for EFI then tried to start it a few times. It did not start. I went ahead and lightly loosened both ends of the filter and a slow flow of fuel came out. Once that stopped I disconnected both ends and loosened the bracket to pull the filter out. No fuel was coming out of either line. I was applying antisieze to the fuel line under the nut to prevent any seizing and all of a sudden the hose coming from the engine shot out fuel like a spray gun. It just happened to spray under my safety glasses and into my eyes. That sucked.

Then it went from sunny to pouring while I was flushing my eyes and my tools got wet. Doh!

But anyways I went back under there and attached both ends without incident.

My question is why did fuel sudden spit out of the hose after it was already drained for a few minutes and how would it be able to spray out instead of trickling out like it did when I first unhooked it?

Just trying to prevent this from happening again later.

 

[LittleCaesar]

You should have pulled the pump fuse, then let it die.

For the future just undo the gas cap the night before changing it out again. Don’t touch the ignition. Nothing else necessary.

 

[Mudeprived]

You should have pulled the pump fuse, then let it die.

For the future just undo the gas cap the night before changing it out again. Don’t touch the ignition. Nothing else necessary.

Where is the pump fuse? I did not see it in the fuse box next to the battery.

 

[19963.4lsr5]

Where is the pump fuse? I did not see it in the fuse box next to the battery.

Sometimes it's a relay. With engine running you pull it. Let engine die and don't put it back in till your done.


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[Mudeprived]

Sometimes it's a relay. With engine running you pull it. Let engine die and don't put it back in till your done.


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What confuses me is that i already relieved the pressure in the system when I removed the filter right? I do not understand how it would suddenly shoot out fuel after the filter has been removed and lines drained.

 

[LittleCaesar]

What confuses me is that i already relieved the pressure in the system when I removed the filter right? I do not understand how it would suddenly shoot out fuel after the filter has been removed and lines drained.

You primed the pump, it expunged the air then the fuel.

I meant to say relay but don’t go that route. If one has time to vent the system overnight there isn’t a need to go under the hood.