I have gas dripping from underneath my truck about Midway on the driver's side looks like it might be coming from the fuel filter but I can't really tell, and it only happens when the truck is on.

 

Well, since I had no response from anyone, I checked it out and it was the fuel line, it was old and brittle.

 

It sounds like you have a fuel leak. If it is near the middle of the truck on the driver’s side, the fuel filter or fuel lines could be the cause. Since it only leaks when the truck is on, pressure might be pushing fuel through a crack or loose connection.

Check the fuel filter and the lines around it for any wet spots. If you see fuel, the filter or a connection may need to be tightened or replaced. If you do not see anything, the leak could be coming from a fuel line further up.

Do not drive the truck until you fix the leak. Fuel leaks can be dangerous. If you are not sure what to do, a mechanic can help.