Mazda B2200 fuel problem

The only way that fuel is going to come out the exhaust is if the engine is not burning it. It could be something as simple as a dead spark plug. When was the last time you did a tune up, you know plugs, wires, cap and button?
If that is up to date then grab a spark tester to find out which cylinder is not firing.
BE CAREFUL! Catching on fire is not fun. I would get my hands on a fire extingusher first. You got lucky the first time, you probably won't the second.
Thanks
Dan

Thank's Dan, I just did a complete tune up about 4 months ago when I got it smoged. Within the year I did the following, I had the comp. Rebuilt, replaced the O2 sensor, replaced the cat. Conv, major tune up, replaced the fuel pump & filter, air filter. My thoughts where maybe the fuel pressure regulator, injectors, computer something causing it to run way to rich.
But I will check for spark. With that amount of fuel getting by it would have to be several cylinders not firing. Thank's again.

Marc,
Could it be that the injector is staying open all the time?
Dan

Yeah, I'm sure that is possible. How do I check them?

I am having the exact same problem. It started suddenly, the truck pours raw fuel from the exhaust. I tuned it up (trying to remedy the problem) and I found #1 and #3 plugs were soaked. I am getting good fire. I have a friend that swears it is a fuel press. Regulator but I haven't tried it yet. I have a Snap-On Solus diagnostic scanner but I'm not getting and codes.

Checking the pressure is a good start. You could also check to see if the injectors are staying open on their own. This is what the manual states for checking the injectors for leaks.
1. Locate the circuit opening relay located behind the driver's side kick panel.
2. Start the truck and unplug the connector from the circuit opening relay. The engine should die within a few seconds.
3. Disconnect the fuel and vacuum hoses from the fuel rail. Unplug the injector electrical connectors, remove the bolts and remove the distribution pipe and injector assembly.
4. Wire the injectors to the distribution pipe so they don't pop off.
5. To check for injector leakage, connect the hose from the fuel filter to the inlet fitting on the distribution pipe. Using a piece of extra fuel hose and a coupler, connect the return hose to the fuel pressure regulator.
6. Place rags under the injectors. Turn the ignition to the On position and energize the fuel pump by jumping the fuel pump test connector terminals.
( I would plug the circuit opening relay back in)
7. Check for leaks.