Replaced the plugs started right up got around the corner it backfired several times and died and that's all she wrote

 

Holley throttle body is stock.

Still dumping tons of gas?

You really need to have a chat with the PCM, and see what it thinks is going on.

 

Gotcha, I'm thinking it might have a bad computer, and yes it is to the point where it bogs down and start backfiring out the exhaust so dang loud that it sounds like a gun shot. So I'm thinking it's either the computer or a blown intake plenum.

 

Blown plenum wouldn't cause that...... It's gotta be an electrical problem.

 

Now I've got no spark or very small spark every now and then. Just replaced the o2 with a ntk. It had a Bosch that was quite carboned up.

 

Guess the computer is bad pulled the plug and has a tremendous amount of corrosion on the pins...

 

Ah. You may be able to rescue it simply by cleaning the connectors, and pins. That would explain why you were getting odd behavior.

 

Going to the junkyard this morning to try and get another one with any luck if not I'll try cleaning this one.

 

So update new cap rotor and plugs, o2 sensor, temp sensor, thermostat, unplugged vapor canister and it's now running great. Still on the rich side ihave a oil/gas mixture of smoke coming out of the exhaust but it's running.

 

How do vapor canisters get plugged? What was in it?