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1994.5 - 1997 7.3L Power Stroke Diesel  

Nut dropped down driver plenum

Old May 28, 2022 | 07:42 PM
  #1  
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Nut dropped down driver plenum

Alright so im a little screwed here and need to know the best way to go about this. Was driving and the nut that is on the inside of my compressor manifold holding the line for my boost gauge decided to work its way off and fall down the driver side plenum... while I was driving. I have a borescope and somewhat of a good magnet/grabber. How do I go about this
 
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Old May 28, 2022 | 10:58 PM
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Most obvious is to pull that plenum off and go fishing with you magnetic grabber. Doesn't sound fun or quick.

Maybe, and a big maybe at this. You could stick a shop vac hose on the plenum intake tube and it'd suck the nut out? That's a stretch, but easit enough to try first.

Worst case, it already got ingested into the engine.
 
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Old May 29, 2022 | 02:48 PM
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Originally Posted by Edgethis
Most obvious is to pull that plenum off and go fishing with you magnetic grabber. Doesn't sound fun or quick.

Maybe, and a big maybe at this. You could stick a shop vac hose on the plenum intake tube and it'd suck the nut out? That's a stretch, but easit enough to try first.

Worst case, it already got ingested into the engine.
Ive been trying to do this the easiest way possible by not taking the fuel bowl and turbo off for the plenum. Right now im trying to figure out how things connect/flow through that passage in the head and also wondering if there's a way it could've gotten all the way to the cylinder or in the valley pan if it has one
 
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Old May 29, 2022 | 04:56 PM
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Once it goes into the plenum on top of the head, air flows into open chambers directly above the valves, the valves open directly into the cylinder.

There no valley pan. The fuel bowl and such mount right onto the top of the block.

Heres a photo with the plenum off. It's possible the nut is sitting on that lower lip.


 
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Old Jun 7, 2022 | 05:14 PM
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So did you find it?

I once dropped/placed a glow plug into a pushrod hole (Blurry eyes) by some miracle I pulled it out with a claw tool.
 
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Old Jun 7, 2022 | 05:26 PM
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Originally Posted by Jaaaaaaackman
So did you find it?

I once dropped/placed a glow plug into a pushrod hole (Blurry eyes) by some miracle I pulled it out with a claw tool.
I found where it is but can't fish it out. Not the greatest timing considering I am shipping it across the country to where I'm moving. But I have a shop set up to take the head off and get it out(it's in the cyl. 8 intake valve pocket)
 
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Old Jun 7, 2022 | 11:16 PM
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If you have an air compressor you can probably blow it out just make sure to cover the intake ports on the other cylinders.
 
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Old Jun 8, 2022 | 09:29 AM
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soda straw and some hubba bubble gum

will get it out
 
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Old Jun 8, 2022 | 10:21 AM
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Hmmm. Are there magnetic tipped mini inspection cameras?
 
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Old Jun 14, 2022 | 09:13 PM
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Consider yourself lucky that you know it went down the plenum. Same thing happened to me, but I didn't find the bolt until I started my truck. Let's just say it revealed itself at that point and cost me $6k
 
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