morrobaybum

The last few times I have filled up I have noticed that the pump's auto shut of stops only after a couple gallons. It then keeps shutting off every gallon or so. I have tried different gas stations and it still is doing this. It is getting really annoying cause I never really know when my tank is full when I am pumping. Any ideas of what could be causing an issue like this?

MBHs2k

My ap2 does it so,writes and I kow my moms g35 used to do it all the time.i wonder what causes it?

morrobaybum

I do have an Ap1 so maybe I am getting something resticting the flow in my filler neck. I will have to take a look at that.

stupkid

Mine use to do that for about a month then it started filling up all the way. Idk what caused it though

s2k-tilldeath

Mine only did that one time and then it never happened again. It was very mysterious

s2cho

my friends sti did this and there was excess pressure in the tank. his dad knows a lot about cars and stuck a tube in the gas tank and got a vacuum. sucking out the excess air. filed up like a charm.

\\s2kris//

I think there is a vent line for the tank and if it's kinked or clogged it causes these symptoms.

steguis

Have you tried not sticking it in all the way?

iVTECallday

Pretty close...Happens when they fill the tank and then continue to try to top it off, it overfills and goes into the evap system (evaporative emmisions) charcoal canister. You need extra room in your gas tank to allow the gasoline to expand. When the pump stops, don't put more in. This will prevent gasoline going down into the closed canister system damaging the filter and causing this problem.

Never had the chance work on an S2000 canister but many Toyota's I worked on had a vent tube that would clog up and also cause the same issue. Check to see if there is a vent tube on the big black box (charcoal canister) under the car by the diff, if I am not mistaken on mine it's right in front of the diff looking at it from the rear, on the drivers side. Check to see if there is any debris/dirt inside of it... Found mud, bugs, webs you name it on the Toyota systems.

305AP1

My car used to do this too, then I figured out its how you place the handle of the pump into your tank. Try playing with it a little. No homo lol