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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Confusing carb troubles

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Old Jul 26, 2008 | 10:39 PM
  #1  
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Confusing carb troubles

I have a 1964 F100 that has a 292, manual trans, and an autolite 2 barrel carb. Whenever I stop, the engine dies, but I can start it right up without tapping on the gas pedal. I've tried playing with the idle mixure screws, increasing the idle rpm and nothing seems to work. There is fuel in the bowl due to the center squirters working. What do you guys think? Thanks for your help

Matt
 
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Old Jul 27, 2008 | 09:10 AM
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How does it idle? Have you done any work and it just started acting up? It might not be the carb if increasing the idle speed is not helping.
 
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Old Jul 28, 2008 | 09:06 AM
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I saw this happen once when the ignition points were way out of adjustment. When the vacuum changed during deceleration, the breaker plate moved to a new position. That changed the point gap by a few thousands of an inch, probably because the distributor was worn.

Anyway, if the points are barely opening or closing in the first place, then a small change in the positioning of the points can be enough to kill the engine.

If the fuel level is too high or too low in the bowl, then the engine won't run right when fuel sloshes around....like during braking or cornering. Try checking the float level, and make sure that the needle & seat aren't leaking.
 
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Old Jul 28, 2008 | 07:18 PM
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It idles just fine, no sputtering or anything like that and the rpms are constant. On these carbs, how to you adjust the needle and seat assembly?
 
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Old Jul 28, 2008 | 08:04 PM
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I have a 223-6cyl, and don't have much knowledge about the original carburetors used on your 292-V8. I think it used an Autolite 2100, which will still work with the top cover removed so that you can see the fuel level while the engine is running.

Autolite 2100 Carburetor Rebuild

To adjust the float level, you bend the small tang that pushes on the needle.

 
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Old Sep 29, 2008 | 03:58 PM
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I'm new and couldn't find anywhere obvious to post this, so here goes. I have a '66 F100with a FOMOCO single-barrel, and I stupidly broke the plastic rod that goes into the float bowl vent while removing the bowl cover for cleaning. Because it's spring loaded the broken end popped out and it simply cannot be found. I have been told that I can just plug that vent hole and leave it. Does anyone have any advice on this? thanks
 
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Old Sep 29, 2008 | 04:10 PM
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Originally Posted by Boo-Boo
I'm new and couldn't find anywhere obvious to post this, so here goes. I have a '66 F100with a FOMOCO single-barrel, and I stupidly broke the plastic rod that goes into the float bowl vent while removing the bowl cover for cleaning. Because it's spring loaded the broken end popped out and it simply cannot be found. I have been told that I can just plug that vent hole and leave it. Does anyone have any advice on this? thanks
Welcome to FTE

Where does this rod attach? Does it have a curved end?

Do you have the carb ID tag number? It's on a triangular shaped plate that bolts to the top of the carb.

I see one rod in the parts catalog illustration that's spring loaded.

It fits into the underside of the airhorn above the float.

 
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Old Sep 29, 2008 | 04:57 PM
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A new thread probably would have been appropriate.

Sounds like you've got an Autolite 1100 carburetor. I happen to have one that was rebuilt by Holley, and the mechanical vent valve has been removed and the opening plugged. I think that causes the bowl to be vented into to the airhorn 100% of the time.
 
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Old Sep 29, 2008 | 05:00 PM
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Originally Posted by JimKoz
A new thread probably would have been appropriate.
He dug up two old threads, so he's got the same questions running in both.
 
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Old Sep 29, 2008 | 06:58 PM
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Here's some info on the vent rod from another forum. I'll hunt up the other revived thread and place it there, too.

Fordsix Performance :: View topic - Autolite 1100 vent valve
 
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Old Sep 30, 2008 | 02:58 AM
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1V Ford Carb Vent Valve

Originally Posted by JimKoz
Here's some info on the vent rod from another forum. I'll hunt up the other revived thread and place it there, too.

Fordsix Performance :: View topic - Autolite 1100 vent valve
No one over there has a parts catalog either...

At least, someone posted a generic pic of it.

Even tho it's a rod, Ford calls it a...

C3AZ9D583C .. Float Bowl Vent Valve (Motorcraft CM213)

How many would y'all like?

Obsolete parts dealers.

Green Sales Co. in Cincinnati OH has three = 800-543-4959

Miller Obsolete Parts in Binghamton NY has six = 800-546-7278

Ed Bennett Ford Parts in Lebanon PA has four = 717-272-8762

Ford dealers.

Fitzpatrick & Lambert in Dushore PA has two = 570-928-8184

Griesel Motor Co in Okarche OK has two.

B. F. White in Stanton TX has two = 800-953-3321

Manderbach Ford in Temple PA has three = 800-225-4364

A coupla more dealers have one each.
 
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