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

Bad Run

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Old Oct 17, 2011 | 10:28 PM
  #1  
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Bad Run

All,

I have an 1986 Ford F250 4x4 with a 7" Lift with a complete new Jasper Engine and Transmission with 1000 miles on the engine. My brother completely rebuilt the the truck to include powertrain suspension etc. It has 2 - 20 gal tanks. The engine is a 351 Windsor w/ an Edelbrock manifold and carb. This truck also has a non eletrical starting system, so in case EMP I get to get home WOOT!

For the past several weeks I have had nothing but running issues. After thr ruck warms up I take it for about a 10 mile raduis from the home. However, everytime the truck acts like it wants to die when I when I step on the gas. So I have to pull over turn the truck off and let it sit for 5 mins. But, that is a temporary solution as I have to pull it off the road the next 2 miles and rinse and repeat until i get it home. I thought maybe it could be the pressure build up in the tanks NOPE. I also thought it could be 1 problem with 1 tank so I switched to the other tank NOPE. Lastly, I thought is could be crap in the tanks so I installed 2 clear inline filters 1 going to the carb from the eletric pump and 1 from the supply hose going into the pump, and still I have problems.

I want to check with you guys first and see if I could get a rational opinion.

Many thanks guys....
 
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Old Oct 17, 2011 | 10:51 PM
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Welcome to FTE.

What kind of ignition system is on this engine?
 
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Old Oct 17, 2011 | 10:53 PM
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MSE off road? dark out now
 
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Old Oct 17, 2011 | 10:57 PM
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Is the carb set right? Also, check for spark if its getting gas, like the firing order. Ya know, the simple stuff. (it's overlooked sometimes)
 
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Old Oct 18, 2011 | 04:37 AM
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check the timing , also check to see if the ignition is wired up rite !
 
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Old Oct 18, 2011 | 07:47 AM
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Advance and accelerator pump come to mind first. Check for vacuume leaks and float levels.
 
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Old Oct 18, 2011 | 12:55 PM
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Found it I believe

All,

Thanks for participation in this discussion.

I believe I found the problem.....

I checked the vacuum and discovered a potential problem.

The pump has 2 outlets (obviously) 1 hose was connected to a line under the front of the engine. The other was not connected to anything so I saw another tube (like) line and I put 2 + 2 together and figured it became disconnected. So I am to assume that both lines must be connected....

If 1 hose is to act as a breather then I incorrectly connected it but, I do not believe I am wrong. JIC if i am wrong please inform "the once shade tree mechanic 20 years ago...." LOL
 
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