Out of fuel with 2 gallons in the tank

[pantdino]

Originally Posted by FRSBRZGT86FAN

@Packofcrows listen to these guys thats a stupid practice it's called "topping it off" and I'm not sure how you haven't seen signs everywhere near the pump saying not to do that

It can lead to expensive repairs as systems that are only supposed to get vapor get drowned in raw fuel, as was stated.

[Simisimi]

Originally Posted by King Tut

Ding ding ding. It could be a shorter aftermarket pump so the pickup is not sitting as low in the tank as the OEM pump and thus you no longer have access to that fuel at the bottom of the tank.

I think we have a winner. I will look at that!

[Scott@HKSUSA]

But the FR-S uses a 65mm body pump from the factory and I'm not aware of any aftermarket fuel pumps with shorter bodies so I'm not sure how the "shorter pump" theory is possible.

My bet is the syphon tube falling off the pump basket. With that disconnected, the pump basket doesn't get filled with fuel so as soon as your fuel level is level with the bottom of the basket - you're out of fuel. And at that level, I could see ~2 gallons remaining in the tank.

[Simisimi]

So there is one other thing that has happened that might be related and could support this theory of my aftermarket fuel pump being part of the problem. So the car has an AVO turbo and runs just over 9PSI boost. On two occasions while driving like a complete maniac, shifting from 4th to 5th, and only while going up a hill....sudden brief loss of power like no fuel. Oh...and both times I had like 1/4 tank or less of fuel. My mechanic told me he thought it was fuel slosh. Now I wonder.