Question about 1984 Ford F 150

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Idle Screw location on 1984 Ford F150 302...

Can't find the location of the idle screws on the carb of my 1984 Ford F150 302. Any help?

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It has a metal cap on it and has to be drilled out and ajusted by a licenced mechanic if your talking about the fuel mixture for the idel it's on the cabe near the body of the carburator.

Posted on May 28, 2009


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1984 porsche 944 starts but wont keep running

Can you keep it running if you increase rpm by pedal? If so then you've got to increase idle. It could also be the idle bypass which is a small orifice that allows air into the carburetor to keep the engine at idle. It could be plugged. It's usually adjustable with a screw to allow more or less air in this increasing or decreasing the idle. See if you can take the screw out and squirt some carb cleaner in there and put the acre back in. See if that does it.

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I need to know how to adjust the carb jets to the right setting on my 1984 ford f150 straight 6 1 barrel carb

The jets are inside the carb & there is no adjustment

You referring to adjusting the one or two idle screws
that are visible, most likely on the front of the carb in the
base plate

You can use a vacuum gauge or a tach along with it
to get the highest vacuum reading & rpm if you use a
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You do that at an idle with the vacuum gauge teed in
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Then just turn the screw in about a quarter turn from the
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Have to reset the idle screw & recheck your timing
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If you can find any specs, you can use them
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Sep 14, 2011 | Ford F-150 Cars & Trucks

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How to get to air fuel mixture screws for adjustment with carb on engine, no room to get flex screw driver to the screws ! This is on a 1984 Ford E-150 van with a 302.

Do you have a Holly on that ? if not then, you have to pull the carb. apart to adjust the fuel/air mix, are you talking about the idle air mix screws, this only adjust the idle mix, not the fuel ratio when running above idle, I have seen slots (screw driver) oval, hex screws, your going to have to see which one you have, take the air cleaner off and reach it from the front of the van.

Jul 28, 2011 | Ford E-150 Cars & Trucks

2 Answers

*UPDATE* 1984 Mustang Won't stay running


You need to check if the Idle control jets are set properly, these are the 2 screws near the base plate on this type of carburettor.

Screw them fully in, then on the primary side screw it out 2.5 turns.
On the secondary side screw this out 1.75 turns. This should get your idle up.

If this dosn't work then you have got problems with the idle jet system which means you need to pull the emulsion tubes out and jets out to clean them.

Also check that your Idle screw is screwed in enough to allow the throttle to be open enough to idle.

Hope this helps



Jul 15, 2010 | 1984 Ford Mustang

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Where is the idle screw for carb. on 1984 ford f-150,2bbl,5.0 liter?

It is on the plate that moves and attaches to throttle cable. This plate rests against the idle screw. Turn clockwise to increase and counter to decrease.

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Idol problems

the idle screw can be located by following the throttle cable to the carby body, you will find a quarter wheel which the cable hooks into at the bottom you'll see adjustment screw, this will adjust your idle speed.

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