[Tomko]

I had put some Sea Foam in fuel when I thought it was bad fuel. Would this have caused some additional problems? The black smoke coming out exhaust is new concern, may be coincidental.

This was an exceptionally bad move.

Who ever told you to do this should never be trusted with your car again. Ever.

At 158000 miles is it still necessary to only use dexos 5w-30 oil?

In a word: yes. You must only use a dexos2 oil. Ever.

Using a dexos1 or some other kind of oil will lead to multiple system failures such as you've described.

Good luck.

 

[Tomko]

Was the clamp too tight?

 

[Tomko]

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.

 

[Tomko]

pressure from a backfire with enough force to break the plastic duct.

Silly newbie question - but can a diesel backfire?

 

[Tomko]

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

 

[Tomko]

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?