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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Losing Gas under load

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Old Jun 5, 2010 | 11:14 PM
  #1  
Ritory's Avatar
Ritory
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From: North Dakota
Losing Gas under load

hey guys I drive a 1986 f250 with a 460 just rebuilt less than 500 miles on it. I've put a new edelbrock carb on it right before the rebuild. Today I started to run into a fuel problem.

The truck will idle all day long if i want to. But as soon as i start to drive within about a mile it starts to spudder and dies. i pull over and it wont fire if i sit there about 5 minutes and hit the key it fires up and im good for the trip home spuddering again into my drive way.

Ive adjusted the fuel regulator and put a pressure gauge on it. I've set it from 7.5 lbs at the carb and back to 4 lbs. Fuel filter is good I can blow through it with no problem. The lines are clear from the engine so I don't think its vapor locking.

I'm starting to think i have a loose wire connection somewhere that when i get moving starts to swing and causes the pump to cut in and out. Any other ideas where to look would be great.

Im just about to actually start making the old truck look good after getting it to run good then with this happening feels like a huge let down. I'm sure you all have been there. Thanks in advance for the help.
 
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Old Jun 5, 2010 | 11:20 PM
  #2  
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fepowerguy8
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From: Loganville, WI
How big of a carb spacer are you using? if the carb is too close to the intake it will still vapor lock despite where the line is. That's all I can think of for now I'm tired.
 
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Old Jun 5, 2010 | 11:36 PM
  #3  
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Ritory
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From: North Dakota
Well new Info. my Temp Gauge is not working. And my Stat isnt opening up after idling for 15 minutes in my driveway to charge the battery up. I shut it off and heard Boiling. its pushing coolant out into the other half of the windshield washer fluid container. So im guessing the truck was Hot cooled down drove got hot. So basically i just took alot of life off my not yet broke in engine.
 
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Old Jun 6, 2010 | 07:35 AM
  #4  
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roadrash63
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From: nw pa.
Losing Gas under load...

cant resist

this happens to me sometimes, when i carry heavy stuff upstairs!!!
 
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