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cannot accelerate, suck air like crazy

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Old Jul 6, 2011 | 12:28 PM
  #1  
shotgun2's Avatar
shotgun2
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cannot accelerate, suck air like crazy

have a 1978 F100, with a 1 bbl carter YFA.

4 years ago i sent the carb to be rebuilt, it sat in the driveway for 4 years, other then the occasional start. ( 2 or 3 time a years )

I am finally back at it, it started fine, i check,

it idle nicely, but as soon as i try to push on the gas pedal, you can hear the carb trying to suck air..... like it's running out of air.

1) I moved the need for the fuel mixture, all the way in, and turn it back 2 full turn.

2) i checked with a light the timing, but i forgot to plug the advance vaccum, ( will redo tonight)

3) (i think i have all the vaccum plug right) i remove the manifold tube and plug all 6 hole, and remove the AIR pump.

4) i replace the gas, put gas treatment in the tank

5) tried a carb cleaner from the top,

thought?? suggestion ??

p.s. already change spark plug, wire, cap

Sincerely

Gerald. <!-- / message -->
 
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Old Jul 6, 2011 | 01:03 PM
  #2  
co425's Avatar
co425
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Prob time to rebuild that carb again. Letting it sit that long ten bucks says it has a bunch of varnish in it.
 
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Old Jul 6, 2011 | 01:52 PM
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shotgun2
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well, we have an ultrasonic machine here at work.

if i take it out and put the carb in it. will it damage it??

G
 
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Old Jul 6, 2011 | 03:13 PM
  #4  
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planehunter
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From: Vancouver, WA
IMO it sounds like the accelerator pump in the carb. It shoots more gas so you can go. I would have the carb rebuilt and save yourself the hassel of trying a bunch of different things.
 
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Old Jul 6, 2011 | 03:17 PM
  #5  
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devino246
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From: Lynchburg, VA
Just pull your carb off, get a rebuild kit and a gallon of carb cleaner, and rebuild it yourself. Its actually really easy.
 
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