Couple of little things

[noahsdad]

OKay guys need your help on a couple of little items. I just got this thing running and am taking the family camping for thanksgiving and need to get her dialed in before hand. I have a two bbl carb stock motorcraft, she is running a little rich right now,, there are two adjustment screws on the front of the carb towards the bottom, I am assuming these are either fuel or air screws. Which one are they and which way do I need to turn them to lean out the mix a little bit.

Second I was getting all of the tire changing gear together Jack, lug wrench and jack bar thingy(raising jack tool) but also found another bar and am not sure what is for same thickness as the jack bar but different shape doesn't look like it is designed to turn anything maybe a prop or pry bar or something i dont use it for anything now but would like to know what its intended use is. I cant send a pic right now but i can later if no one comes up with any iedeas.

Things for now are good with the bronc except that the back window motor is out, motor works and everything is lined up but aparrently the gear on the motor is gone, can these be rebuilt or just a new motor purchased thanks for the help fellas happy wheelin

 

[Seabronc]

There are no mixture adjustments available on a mid 80's carb. Idle mixture is factory set and sealed. Above idle the mixture is controlled by the metering plates and can not be adjusted without taking the carb apart and changing internal parts.

I'm not sure without a picture of what carb you have. However, atleast on of them is probably the fast idle adjustment and does not effect mixture, and is a mechanical linkage adjustment for cold idle RPM. Take a picture of the sides and front of the carb and attach them to this thread.

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[noahsdad]

I will attach pics later tonight, but I do know that these screws are not mechanical from when i rebuilt the carb, they have springs between the screws and the carb and go into little holes. with the carb off you can see the tips of the screws going through the barrels just above the intake manifold, one ***** per barrel but i will send pics

 

[Seabronc]

That's a horse of a different color. Now it is beginning to sound like a rebuilt Holley 4180 4BBl carb which explains the idle mixture screws being exposed. If that is the case, both screws are idle mixture adjustments, one for each primary. However, they only adjust the idle mixture. They have virtually no effect on the fuel supply at cruise. If the truck is ideling nicely, I'd leave them alone for now. If you will note, those tiney holes are located below the throttle plates which nearly completely closed at idle. Once you move the throttle off idle the plates open up and the nozzles above the plate supply the fuel mixture which is controlled by the metering blocks between the fuel reservoirs and the body of the carb. Adjusting the off idle mixture becomes a process of changing components like jets, power valve, etc.

I can believe that the carb is running a little rich, but I'd suggest that if it is running nicely that you save the playing around with the carb for another day. You could put yourself in a position that it will not run well at all and I believe that you are planning a camping trip in the next few days. Once you are back and you want to really fine tune the carb, then I'd suggest you get some books on Holley carbs and I have some links to sites that will be very informative.

Attach a picture of the jack thing you are talking about.

Good luck,

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[Seabronc]

Things for now are good with the bronc except that the back window motor is out, motor works and everything is lined up but aparrently the gear on the motor is gone, can these be rebuilt or just a new motor purchased thanks for the help fellas happy wheelin

You can get a kit at the Bronco Graveyard http://www.broncograveyard.com

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[noahsdad]

Wekk the camping trip went off okay I guess the new engine and all performed well no over heating issues or anything like that. But as Murphy's law states get used to things breaking here we are with the kids and everything in the car and my brakes start to fail. I limped it thgrough the trip stopping way early and all only to get home and have to replace the master cylinder not so bad 15 bucks at the store buit comeon just last a little while without breaking please. Oh and I found window gears at the local auto store do all three windows use the same gear? Thanks for all the help guy I really appreciate it and so does the family we enjoyed having the bronco this weekend for sure

aaron

 

[Seabronc]

do all three windows use the same gear?

aaron

Glad you enjoyed your weekend. Yes all the motors use the same gear.

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[noahsdad]

OKay guys I am officially a rear window repair expert. Had to replace the gear set today, hated to do it but I needed the rear window fixed in a bad way. Pain in the but to get to but not all that difficult to rfeplace. Question for you gear heads who have seen the gear set on these. Why would you have a metal gear that slides inside of a platic gear held in place with even chincier plastic dowells. This seems to me that this things is set up to fail, why would they do that? Is this a safety issue designed to break a gear before an arm or childs fingers or what. I still have one bad window and the old gears can I just epoxy the plastic and metal gear together or put some wooden dowels inside to keep the metal gear held tight. thanks for all the help guys

 

[Seabronc]

OKay guys I am officially a rear window repair expert. Had to replace the gear set today, hated to do it but I needed the rear window fixed in a bad way. Pain in the but to get to but not all that difficult to rfeplace. Question for you gear heads who have seen the gear set on these. Why would you have a metal gear that slides inside of a platic gear held in place with even chincier plastic dowells. This seems to me that this things is set up to fail, why would they do that? Is this a safety issue designed to break a gear before an arm or childs fingers or what. I still have one bad window and the old gears can I just epoxy the plastic and metal gear together or put some wooden dowels inside to keep the metal gear held tight. thanks for all the help guys

Good question, but I'm afraid only FOMOCO could answer it. They have been using the same motor for years, and years, and years in most of their vehicles. I wouldn't mess with jury rigging that gear. The replacement parts and only a couple of bucks and if you really need them, I have two sets I took out of motors that were bad electrically.

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[noahsdad]

i appreciate the offer but i will take care of it I was just curious it seems like a silly design to me, even though i am not an engineer and have not a single day of college under my belt. Everything else seems to be working fine for now I just need to get un-lazy and go through the ignition making suree all is okay and i am not missing. I can smell gas pretty bad when i idle and dont know if I am missing running rich or the timing is just a tad off or something. It has a little bit of a hard time starting up when it has been sitting for a while and you can see some smoke from the exhaust but then once it starts it runs pretty good. This is the part where i might taKE it to a mechanic and pay him to fine tune the thing

 

[bobstrat]

OKay guys I am officially a rear window repair expert. Had to replace the gear set today, hated to do it but I needed the rear window fixed in a bad way. Pain in the but to get to but not all that difficult to rfeplace. Question for you gear heads who have seen the gear set on these. Why would you have a metal gear that slides inside of a platic gear held in place with even chincier plastic dowells. This seems to me that this things is set up to fail, why would they do that? Is this a safety issue designed to break a gear before an arm or childs fingers or what. I still have one bad window and the old gears can I just epoxy the plastic and metal gear together or put some wooden dowels inside to keep the metal gear held tight. thanks for all the help guys

if i had to guess id say its to prevent the window from damage should it not line up correctly when the tailgate is shut.

im in the process of becoming a rear window repair expert as well. i noticed my tailgate needed a little adjustment to get the window moving freely.