When I try to put gas in the tank it shoots out?

1997 MERCEDES BENZ 300E
300,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BRANDI SHAY LANGLEY
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  • 1 POST
When I try to put gas in the tank it shoots out like it’s full. It’s empty. Does that mean it’s blocked it has the tank moved down too far?
Feb 15, 2023 at 1:02 PM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

When the tank if empty, there is air in it. For fuel to enter, the air needs to be displaced. So, what you are experiencing is likely a plugged or damaged vent.

I don't know if this has a gas or diesel engine. If it is diesel, the vent comes out at the top of the tank and vents.

If it is a gas engine, it exits at the same place, but then is sent to the charcoal canister before venting,

I attached two pics below. The first shows the vent location. The second shows where the charcoal canister is located.

Let me know if this helps or if you have questions. If it is a gas engine, to test if the problem is the charcoal canister, disconnect the hoses to it and see if it takes fuel normally.

Let me know.

Joe

See pics below.

Feb 15, 2023 at 8:32 PM
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