So here's the deal:

My buddy with a 93 single turbo fd accidentally filled his tank while letting the car idle. now the car will turn over and start but will eventually stall out. Also it idles around 800-900 Rpms now.

We're stuck at the gas station anyone know the solution to this?

Thanks in advance.

UPDATE: Now car won't turn over or start. Can tell it's flooded by when it was able to turn over, gas vapors were coming from exhaust

 

Filling the tank while running shouldn't have any effect on the way it runs.

 

Well we just waited for a bit and it started. Now idles at 2000 Rpms?

 

Too little information on your friends car for people to offer suggestions and solutions.

 

It's a 93 fd with a half bridge port and a single turbo conversion. His tune is also not too good I know. The idle drops after he fills up on gas. It will run like a few moments after He fills up on gas then drops from 1200 Rpms to 1000 Rpms after that it just goes down to 800.

Also, when put in neutral gear it drops a lot down to about 500-600 and the idle becomes very rough which makes the car eventually a shut off from a very low idle. He just wants to know what it could be before he starts buying parts. He has adjusted the idle while it drops just to keep around 1200.

Did I miss anything?

 

Yea it wont have anything to do with filling the car while its running (which is not good practice by the way)

Have you ever looked into why running electrical wires or a fuel pump inside a fuel tank dosent result in an explosion? Its because there is not enough air in the fuel tank for combustion to happen.
When you open the petrol cap, it can create a situation in the tank where there is enough air in the fuel tank that combustion can happen..and with the car running the electrical components inside the fuel tank are charged and operating in an environment that is suddenly combustable..

Unless you have a flat battery or something, so cant shut the car down, always turn it off before filling..
Yea it probably wont blow up, and iv done it before myself as well when i couldent shut the car down due to flat battery..but yea, not good practice.

 

Def not he and I understand that. Making a mistake calls for fixing it which is what hes trying to do. Overall, are you saying the air from the outside environment getting into the fuel system within the car could've messed with the fuel systems electrical components?(I.e. Fuel resistor, etc etc)

 

Nope, i was only pointing that its not good practice to leave the car on while re-fueling, and a reason why

I do not feel that doing it could have, or would have damaged anything. I think the problem is unrelated.