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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Variable Venturi Problem

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Old Nov 10, 2022 | 10:59 AM
  #16  
ChevyExterminator's Avatar
ChevyExterminator
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Mountain Pass
Joined: Dec 2020
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From: Winston-Salem, NC
No, thats just light reflecting while the engine is shaking. I saw that when I was reviewing the video. Thanks Paul
 
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Old Nov 10, 2022 | 06:43 PM
  #17  
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ChevyExterminator
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Mountain Pass
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From: Winston-Salem, NC
One thought I just had. In the 5 seconds that the truck does run, sometimes I would blip the throttle just to see the response. It would initially respond well, but when I did it again it would bog down and die. In my mind this is a Air/Fuel ratio problem. For those that dont know, these carbs have adjustable jets that allow for the tuning of the fuel curve along the whole rpm range. The seller on eBay said that it was from a 302, and my engine is a 255. Could this be an issue of the jets being out of adjustment for my engine? I know that you adjust them through screwing in and out the jets, but Im not sure how to tell when I have achieved the right "setting."

If that was too much to read, my question is; could my issue be caused by the jets, and how do I adjust them?

Thanks everyone!
 
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Old Nov 11, 2022 | 09:40 PM
  #18  
Westcoast Highboy's Avatar
Westcoast Highboy
Tuned
Joined: Nov 2013
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From: British Columbia
Sounds like you are committed to making this carb work. I wish you luck. I’m a retired Ford mechanic. Those carbs rarely ran well when brand new and were nothing but trouble when they had a few miles on them. Great idea in theory but Ford’s design and application was a serious disappointment. Not saying you can’t make it work but there are many better fuel solutions out there that are far simpler and work far better.
 
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Old Nov 15, 2022 | 03:48 PM
  #19  
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ChevyExterminator
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Mountain Pass
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From: Winston-Salem, NC
Just circling back on my previous question about the jets. Anyone know anything?
 
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Old Nov 15, 2022 | 04:05 PM
  #20  
f5fordgirl's Avatar
f5fordgirl
Fleet Mechanic
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Joined: Apr 2012
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How much is the fuel line kinked where it connects to the carb filter?
 
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