This has the potential to be really nasty, so you need to take certain precautions. Overkill is not a bad thing here.
First, if the vehicle is close to anything you like, house, other car, boat, move it.
Leave the hood open until all the gas has dried out.
Then, take a bright light and look for the obvious. Broken fuel line, something fell off, that sort of thing.
If you don't see anything, start rounding up some help. You really need at least one other person. And it needs to be someone who has fairly steady nerves.
Then get at least one fire extinguisher, more than one is nice. Depending on the type of engine and height above ground, I like a heavy blanket soaked with water that has some baking soda mixed in as well.
When everything is ready, have someone turn the key on for a second. Since its TBI, the fuel pump should come on for a second and you may see the leak.
The reason I want someone with good nerves, is in case something happens. Its not a big a problem with modern cars, since the fuel pump stops after a few seconds if the engine does not start.
On older trucks, you had to bump the engine or even start it to get fuel pressure. I had one crank and catch on fire at the same time.
I yelled turn it off, but the guy doing the cranking was already 20 feet away and moving fast.
I had to snatch the coil wire off, pick myself back off the ground and then put out the fire.
If you don't see gas squirting, look around for a wet spot before you try it again. The idea is to find the leak with minimum leakage.
If no luck at first, keep turning the key on and off until you find it.
While there are ways to bump the fuel pump from under the hood, the less chance of sparks the better.
Remember gas fumes will ignite quite a distance from the source of gas.
I know it sounds like I am being over cautious, but I have scars to tell why......
