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

no gas 2 carburetor

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Old Feb 16, 2016 | 12:19 PM
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no gas 2 carburetor

I cant figure out why my 86 f350 with 460 isnt getting gas. Ive checked everything from the carb down to the fuel filter, and its clear i put 30psi through the line back to the front tank and there is no air getting to the tank ?
Any ideas or tips ?
Feel free to text me or call 5052909709
 
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Old Feb 16, 2016 | 12:43 PM
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Do you have electric pumps in the tanks? You most likely do, and they may be bad.
 
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Old Feb 16, 2016 | 12:51 PM
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franklin2

They do but is there way for me to do a deep cleanin clear out the old in the pump assembly?
 
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Old Feb 16, 2016 | 01:53 PM
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Are the pumps running? Usually there is a electrical problem preventing them from running, or the motor in the pump itself is bad.
 
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Old Feb 16, 2016 | 01:54 PM
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There is fuel selector mechanism
 
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Old Feb 16, 2016 | 01:57 PM
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Originally Posted by Jake Wenzinger
There is fuel selector mechanism
Usually when the fuel selector valve goes bad, it wants to draw from one tank all the time. If you think there is a problem with the valve, pick a tank, front or rear, and splice the hoses together to run on that one tank all the time. You could also take the lines loose on the valve coming from the tank and run them into a bucket and see if you get fuel when you turn the key to start.
 
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Old Feb 16, 2016 | 03:35 PM
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fuel lines

I just dropped the fuel tank and took out the fuel pump and its clear and after lunch im hook a air hose and push air through the main lineto the fuel filter. I have to wait to till i get paid but is their a way i can take the line off the rear tank to tie in to the front tank ? The line from the front tank to fuel selector mechanism broke. Can i pull off the rear and use it ?
 
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Old Feb 16, 2016 | 03:38 PM
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But there is 2 lines going to the carb. Is one the return line ?
 
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Old Feb 16, 2016 | 03:49 PM
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Hot Fuel Handling systems default to the rear tank.

Is the selector relay energized, or not?
 
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Old Feb 16, 2016 | 03:50 PM
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Originally Posted by Jake Wenzinger
But there is 2 lines going to the carb. Is one the return line ?
the vapor seperator does have a return line.
 
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Old Feb 16, 2016 | 03:50 PM
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Their plug but no-where to plug it in
 
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Old Feb 16, 2016 | 04:19 PM
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Originally Posted by Jake Wenzinger
Their plug but no-where to plug it in
Can you explain what this means?
 
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Old Feb 16, 2016 | 04:22 PM
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The fuel line to see it was pluged or fuel lines to tie them together
 
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Old Feb 16, 2016 | 04:35 PM
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You have a six port selector valve on the drivers frame rail right behind the front of the midship tank, correct?

You have a fuel pump relay and a selector relay up by the drivers hood hinge, correct?

Is the selector relay sending power to the valve (selecting the midship tank)
Or does it have no power to the valve (selecting the rear tank)?
 
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Old Feb 16, 2016 | 04:39 PM
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You do realize the pump relay is only energized when the oil pressure switch is closed. And bypassed when the starter is cranking... right?
 
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