MKJ,
I have no experience with your car.
Building on what Nate said - many car have flexible section in the fuel filler tube. On older cars, it can go bad - my neighbor had this problem with his Jeepster. Look for a flexible section. It may be the culprit.
If you can not find the MB part, flexible radiator hoses for universal use are made in various diameters and lengths. You may be able to find a substitute.
Bobby
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:
>
> Folks,
>
> 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.
>
> 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.
>
> MKJ
>
--
Toward freedom,
Bobby Yates Emory
