Your car is far too new for me to know but the older ones have a vent tube underneath the car that's supposed to have a rubber flapper valve on it , often it gets crudded closed with road grime or mud dauber wasps build a nest in it effectively closing it .
you'll need to jack and safely bock the rear end of the car WAY up then scrootch underneath with a flashlight & look for it , older cars it comes through the trunk floor and turns kinda forward left of the pumpkin , it is held to the body by some clips .
DO NOT clean it with chemicals ! *gently* squeeze the rubber thing and it'll open & puke some dead bugs & sticky old Diesel Fuel on your face , repeat as necessary until it's clean .
Also look at the rubber vent tube between the filler neck and the tank proper , this can be hard to find & necessitate trunk inner panel removal to find .
-Nate
MKJ wrote:
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> Folks,
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> My car has recently begun leaking -- spewing might be a more appropriate term -- diesel after I'ved filled the tank to full. For the last two fill-ups I (1) left the fuel cap off after parking in the garage and roughly a gallon spilled out on the passenger side and puddled by the driver's side rear tire; (2) put the cap on after filling and parked for a week at the small local airport. During that time I received a call from the airport hazmat crew to report that they cleaned up a diesel spill. (They left their message on my office phone -- how the heck they traced that down is unnervingly Big Brother, but that's an issue for another day.) To give you some idea how much spilled out, I was down a quarter tank at 40 miles. Normally the trip odometer reads 100+ at that point.
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> Does anyone have insight into potential causes? Since the tank is inside the car body, a rust through or other hole seems far fetched. A fuel line problem would constantly leak rather than when the fuel level is above a certain point. I'm guessing a plugged vent causing a pressure problem, but wouldn't leaving the cap off have equalized pressure? I saw something on the internet about a check valve on the tank. Could that be the culprit? Any suggestions or sharing experience with this problem would be appreciated.
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> MKJ
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