i have a 1982 ford bronco with a motorcraft 2 barrel carburetor.when i start driving it, it will run fine.then you can smell a strong smell of gas and the carburetor starts busting up.like it is running out of fuel,the more you push on the gas pedel the it will bust up.it will do it for a few minute then going back running fine like it should run.i have change the fuel filter and i had to put a new fuel pump on two weeks ago.if anyone have any ideas that can help me. they all will be welcomed

 

By "busting up" do you mean it is falling on its face or backfiring through the carb?

 

i want to say its backfiring because it pops and when you mash the pedal down while it is doing it.the bronco will not pick up speed and pops more.but when the popping stops the bronco runs fine

 

I would suggest checking your timing. Backfiring is typically a result of timing being off. If you don't have a timing light, you would do well the borrow one and check the base timing. Have you replaced spark plugs lately, crossed plug wires can cause similar symptoms. If you know what engine is in it you can get the firing order and double check that too.

 

could to also be caused if two spark wires are touching each other

 

Only if the wires are old enough to allow spark to jump between them. Best way to check for that problem is to open the hood at night away from other lights and have a look into the engine bay and see if you an see sparks (arcs) jumping from wire to wire or from wires to the engine block while the engine is running. If you get a lot of blue/white arcing then yes, time to replace plug wires and that MIGHT help with your situation.

 

i took all the spark plugs out one at a time and check them.when i took the one out of the number three cylinder it was the only that had not been firing in a while and its was wet with gas and had a strong gas smell.all the other plugs looked fine

 

Sounds like you may have solved your problem..... I'd definitely fix the misfiring #3 cylinder problem - as others have mentioned, either wires going bad, or possibly a bad plug or chunk of carbon wedged in the plug. After addressing this, it's hopefully going to fix your trouble. If not, I'd start focusing on the other parts of the ignition. Some years ago, I had an ignition module fail. Most will die when they warm up and the internal contacts break with heat expansion, and then fire again once they cool off and the internals cool down and parts contract to the point where they'll make contact again (we once nursed a Crown Vic home by keeping an ice pack tied to the ECM). The ECM on my F150 started dying in a different way - very randomly, it would stop firing. I blamed the fuel system and carb and just about rebuilt both before I realized it was the ignition. One day it started misfiring shortly after I started it and, in the course, loaded up the exhaust system with raw fuel and air. It threw out a couple of off-timed sparks, and backfired once or twice, lighting off the bomb in the exhaust and blowing my muffler apart. I still didn't figure out that it was the ignition (I still thought it was the carb loading up) until it left me on the side of the road a week later. Good luck with her!