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Fuel Pouring Out

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Old May 9, 2010 | 12:48 PM
  #16  
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Originally Posted by F350-6
You don't have to actually start the truck. The fuel pump is electric and will stay on for 25 seconds when you turn the key on and don't start the motor. Just turn the key to the on position and look / listen for the leak.

hmmm... I thought I tried this and nothing came out unless I started the truck.

I'm not at the truck now, but will try it again.

If I'm right and nothing comes out unless the truck is running... does that point to anything?
 
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Old May 9, 2010 | 01:01 PM
  #17  
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Originally Posted by 35racer
If I'm right and nothing comes out unless the truck is running... does that point to anything?
The only part of the fuel system not getting fuel with the truck off is the pistons. The fuel pressure does not increase, or the fuel does not flow any different with the engine running.

Perhaps there's just a delay in when the leak starts (key on) until it builds up enough fuel to pour out on the ground. The fuel system is pretty simple. 2 lines going between the tank and the filter, a line going to each head that fills the fuel rail inside the head. There are also fittings that screw into the side of the head that could cause a leak. Then you've got the lid, bow, and stuff attached to the bowl and that's about it. If it's a fuel line, the common place has already been mentioned. Don't know why the common leaks are always the hardest ones to reach.
 
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Old May 9, 2010 | 01:05 PM
  #18  
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Thanks.

On my way to Mothers Day dinner shortly... will stop by the truck and turn the key on for a while ... see if anything comes out.
 
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Old May 10, 2010 | 04:14 AM
  #19  
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I have to agree with DJANZEN on this one based on what he describes as that is exactly what my truck did. Right where the clamp goes on the transfer line through the valley to the back of the right head, the rubber/vinyl coating on the clamp had worn off and the now steel clamp rubbed a small hole in the fuel line. When running it pumped one he*l of alot of fuel out.

Looking from the top it will be on the left side of the valley right behind the intake plenum.

Good Luck.
 
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Old May 10, 2010 | 01:56 PM
  #20  
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Thanks all

I gave this info to the repair shop...

the owner has a 7.3Diesel himself so that's a hopeful sign.

Will let you know what he finds.
 
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Old May 11, 2010 | 01:36 PM
  #21  
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BINGO!!!

The metal line, appears to be right under a clamp, had a hole in it.

Thanks for the help all.
 
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