I just bought a 1982 fullsize from a guy that was having a problem that everytime he would drive he would step on it and the bronco would just bog out.
He had the heads overhauled new timing chain fuel lines blown out replaced the carb. and intake manifold with a new edelbrock beefed up the ignition and still falling on its face i just popped the hood yesterday for the first time. my first attack is going to be the catalytic converter is this a good first ussumption or is there a better place to start please any feed back will help!!!!

 

could very well be a blocked cat, or a clogged fuel filter

 

I'd have to agree with wlihntr, check there first as I've had this problem on a couple other vehicles of mine.

 

the fuel filter has been replaced

 

So you bought this rig from a guy who was having problems with it. You are gonna fit in just fine around here.




Oh yeah, I was going to say the fuel filter as well, but I was beat to it.

 

Give this a shot...

https://www.ford-trucks.com/forums/f...splay.php?f=44

It's the Big Bronco forums on this website. If there are more knowledgable Bronco owners out there, they're not on this website. The guys in there know it all up and down. Ask in there, and you'll definitely get some more responses.

 

Assume nothing and don't believe half of what you were told about the history.

Does the engine miss at any point? Can it pull a steep grade? Does it backfire through the intake or exhaust?

The cat could be a problem... check it out. Vacuum gauge.
Bogging is usually a fuel starvation issue unless it's also missing. If it misses then it's more likely an ignition problem.

Start with the tank, the fuel pickup, the lines, the filter(s), fuel pump pressure.

 

What kind of carb does it have and what's it's condition?

 

If the carb is too big for the motor, like a 750CFM unit, you might need to go to a smaller unit. If it's a 600CFM unit, it might just need to be fine tuned.I know from personal experience how hard it is to tune an Edelbrock, I own 3 of them and each one is more problematic than the previous one.

 

Yep. Thread moved to Big Bronco forum.

-Matt