Question about 1981 Ford Bronco

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Hello I have a 1980 Ford Bronco 351 2bbl. Wondering if anyone knows which screws adjust what? Please if anyone has any ideas please respond. Thank you.

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  • punkbuddie Jul 31, 2010

    Thank you so much. It is a Motorcroft, and all the adjustments screws on the carburator would be great.

  • punkbuddie Aug 01, 2010

    When car is cold it starts good, runs about 30 seconds and dies. then starts again easily, sometimes it will do this 2-3 times. Then runs rough till it levels out and runs good. It has a 3.8L engine. Please help confused. Thank you.

  • punkbuddie Aug 01, 2010

    When car is cold it starts good, runs about 30 seconds and dies. then starts again easily, sometimes it will do this 2-3 times. Then runs rough till it levels out and runs good. It has a 3.8L engine. Please help confused. Thank you.



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Here are some images that might help to assist you, and let me know if you require any further assistance.

Adjust the curb idle with the engine warmed up and the choke off.

Hello I have a 1980 Ford Bronco 351 2bbl. - 421d8f7.jpg

The air/fuel mixture screws should be adjusted with the engine warmed up and at normal idle speed, then turn each air/fuel mixture screw in one at a time until the engine just begins to mis-fire, then back the air/fuel mixture screw out 1-1/2 to 2 turns out a half a turn at a time until the engine idle is the smoothest. (your vehicle might have restrictor caps over the air/fuel mixture screws to limit the amount of adjustment)



To adjust the vacuum tension pull on the choke pull-off:


Adjust the fast idle screw to the proper RPM with the engine cold and the choke on.


Posted on Aug 01, 2010

Testimonial: "Thank you so much, where were you 2 months ago. lol. Do you maybe know anything about olds 3.8 engines?"

  • Zaraki Aug 01, 2010

    What did you require about your Olds 3.8?

  • Zaraki Aug 01, 2010

    If that Olds 3.8 is fuel injected or has a mixture controlled carburetor then it sounds like it might be the CTS (Coolant Temperature Sensor) for the computer and not the temperature sending unit for the temperature gauge/light. Most Oldsmobile engines usually have a sensitive cooling temperature circuit that the computer uses, and when the CTS gets out of range on some Oldsmobile engines they will not even start.



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