Sorry Fellas! Thanks for keeping up with me. School just started so its been a little hectic.
It sounds like there is a lot of pros and cons to both. Right now I just need the truck so I can get around town and I'm not gonna be showing her off like a new born so I'm not gonna desmog it. Maybe at a later time but desmoging sounds like more than I want to get into right now.
That being said. I got the carb off last week. Couldn't find a vacuum leak, So I'm gonna rebuild it. I've been in the process of cleaning it and should be finished(ish) as of tonight. So I might be able to put it back together and put it back on tomorrow. We'll see. I should probably do homework, but eh...
But I did have a question. I was trying to get to the Idle mixture screw and its got that dumb cap on it. Well its ON there. and Ive tried just about everything and broke a few tools in the process to get it off. and it won't come. Any ideas?? i have a picture... i might have drilled too deep. Can't really tell unless I can get it off.
Oh and, I couldn't separate the lower half of the carb from the middle section of the carb. The screw that holds i together won't budge and I'm afraid I'm gonna strip it. So I just left it. Do you think it's a necessity to get it separated and put a new gasket there(if there is one there? looked like just the spacer to me)?
Cool. Stick with it, Gallego.
The nice thing about going the 'do-it-yourself' way first is that it is low cost and you get to really learn...and when you fix it right, you get the reward.
Keep persistent and approach system by system as you are doing, using the FSM to check each system (especially the Emissions FSM).
Once you drill that cap off with the proper sized bit that Jim recommends, I would back out that Idle Mixture Screw and check it is not bent and the tip is good (no groove cut out on one side for having been sitting in one position its whole life). You should be able to order a new Idle Mixture Screw through Toyota if necessary... I think...
In order to do a proper carb rebuild, you will have to separate the insulator from the bottom plate and throttle plate, so that you can dip the large metal plates in Berryman Chem Dip overnight (see Pin_Head videos).
In order to remove those plates, you must remove that bolt (the one that goes up through the bottom and holds the plates together - it should be hollow and have a single-slotted head on it).
I ran into the same problem you have and was stripping that single-slotted head. I solved the problem by using an impact wrench and a better fitting single slot driver head for the wrench. Backed right out.
I used a Milwaukee 18V cordless 1/4 drive impact wrench and a Milwaukee single-slotted drive head (after eating up 2 cheap Black and Decker heads) from this set-up (got it at Home Depot), it's a Milwaukee 10-in-1 Square Drive Multi Bit Driver:
But if you don't have an impact wrench, maybe you can borrow one or take the carb to a shop that has an air impact wrench...but you should be able to get that bolt out!
Also, after you get the carb rebuilt and back on, you still might have a vac leak somewhere (they are hard to find)...but maybe one step at a time...