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@diesel this looks like something that we need to write a specific thread about and place it as a sticky.
I just put together a common issues list and posted it. :)
 

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This has occured with our two highest mileage CTDs. 158,000 and 186,000.

@diesel this looks like something that we need to write a specific thread about and place it as a sticky.

I'm guessing we will all encounter this mechanical failure in due time. In some ways a refreshing change from emissions system faults.
The duct is hard plastic, not rubber, isn't it? So it probably becomes brittle with the heat-cycling and cracks, perhaps?
 

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I was wondering this myself.
I would believe that to be very difficult, due to direct injection, and the fact that diesel won't auto-ignite when it's not compressed.
 

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Will see what parts it takes to get Diesel back on the road again, makes me wonder if this is a weak link on higher miles CTD would it make sense to replace this plastic tube/hose if that is what blows out as a precaution maybe when timing belt is replaced? In other words why wait till it fails??? just a thought.
 
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Will see what parts it takes to get Diesel back on the road again, makes me wonder if this is a weak link on higher miles CTD would it make sense to replace this plastic tube/hose if that is what blows out as a precaution maybe when timing belt is replaced? In other words why wait till it fails??? just a thought.
A very good thought.

There's also a guy who makes custom nomex-lined silicone hoses for the aircraft industry. He's currently produced some for duramax. I'm wondering if he'd make a replacement for us.

http://www.csobeech.com/GeeBee.html
 
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A very good thought.

There's also a guy who makes custom Kevlar-lined silicone hoses for the aircraft industry. He's currently produced some for duramax. I'm wondering if he'd make a replacement for us.

CSOBeech - Gee Bee Beechcraft Product Store
That could be a very good idea, maybe that would hold up longer and just need replaced once and then just inspect it at each oil change? I wonder if one was looking it prior to failure if it is showing signs of failure like a crack or something?? maybe not.
 

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Silly newbie question - but can a diesel backfire?
Diesel said he heard a pop noise so instantly I though backfire but more I think about it I can`t come up with away it would especially with direct injection an compression ignition...................thanks for
making me think. that intake is bolted an clamped an doesn`t move, so why would it blow off an break ??, or it appears like it blew off.
 

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Diesel said he heard a pop noise so instantly I though backfire but more I think about it I can`t come up with away it would especially with direct injection an compression ignition...................thanks for
making me think. that intake is bolted an clamped an doesn`t move, so why would it blow off an break ??, or it appears like it blew off.
Definitely follow your logic. Could that pop sound have been the duct coming off?
 

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I would believe that to be very difficult, due to direct injection, and the fact that diesel won't auto-ignite when it's not compressed.
That was my thought, but then I realized that other then very wrong ignition timing, I didn't know why a gas engine backfires.
 

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Definitely follow your logic. Could that pop sound have been the duct coming off?
Plastic snapping in shear would make a lot of noise.
 
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Since this is a intercooler hose, isn't this connecting something bolted to the frame with something bolted to the engine? Since engines do move on the motor mounts under load, there'd would have to be some flex somewhere.

Which raises another question - what happens when the motor mounts start going bad? Because it could cause excess engine movement. This might be the weak link when that starts to happen.
 

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Since this is a intercooler hose, isn't this connecting something bolted to the frame with something bolted to the engine? Since engines do move on the motor mounts under load, there'd would have to be some flex somewhere.

Which raises another question - what happens when the motor mounts start going bad? Because it could cause excess engine movement. This might be the weak link when that starts to happen.
the piece that broke is bolted to the top of the engine so unless the bolt came loose an fell out can`t see how its going to move.
 

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The plastic on mine cracked in almost the exact same way as the OP's did, so it seems a common failure area. I talked to the dealer yesterday and they said parts are ordered and they expect them soon.

I am a bit confused though. When this happened, I had smoke and strong diesel fumes, but doesn't an intercooler cool the clean intake air?
 

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I am a bit confused though. When this happened, I had smoke and strong diesel fumes, but doesn't an intercooler cool the clean intake air?
Yes, it should only be compressed air from the turbo. That's a good point - you should not have had either...
 

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So, just the pipe and all is well. i am not sure why they listed that gasket - it's the wrong gasket as far as i can tell, but I am not 100% sure. I am also not sure why the OP needed all the extra stuff. Probably driving it for 20 miles like that caused damage. My soot grams were exactly where they were when the issue happened, and no other components were broken.

Text Receipt Document Font Paper
 
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