After filling up my tank, gas overflows under the car?

Hi,

There are a few things it could be. I have questions. Does it leak while filling it or does it leak when it reaches full? Does the engine need to be running for it to leak? By chance, is the check engine lamp staying on when the engine is running?

Sorry for so many questions. It could be a filler tube, the fuel pump module gasket, a rust hole in the top of the tank, or even a fuel line.

Let me know.

Joe

Hi,

If I had to guess, either the tank is rusted through, or the top of the fuel pump module is bad. I also bet the check engine light is related to the evaporative emissions system (EVAP) due to the leak.

At this point, which needs to be inspected. There is an access port under the rear of the vehicle (trunk area). We need to remove that so you can see down inside and determine where the leak is coming from. There is also a rubber gasket that is used to prevent leakage where the pump assembly meets the tank. That could be faulty as well.

I attached the directions below for removing the fuel pump assembly. You need to at minimum access it so it can be checked.

I attached the directions below. Let me know if this is something you feel comfortable performing.

Take care and let me know.

Joe

See pics below. Note: the directions are for the replacement of the assembly. You may not need to do that, but that is the only way I have the directions to access it.

Hi,

LOL no need to apologize and just to let you know, I enjoyed your response. I needed a good laugh.

If you have a chance, could you let me know what is found? I am interested and your response will likely help others.

Also, don't they use salt in Chicago when the roads are bad? I'm in Pittsburgh and rust is all we know. LOL

Let me know.

Joe

Hi,

This is interesting. The access port is designed to replace the pump. When the retainer is removed, the pump will spring upwards. Is it possible that it is going up at an angle?

Let me know.

Joe