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A little history, I am working on a 2005 Superduty SRW, 6.0l. I bought the truck used, has run well until I developed a coolant leak. The shop that normally does my truck work had it for over a month and can’t find the source. It appears that the coolant is leaking from the EGR coolant line( I think it is the EGR coolant line). The line I am referencing runs from the underside of the intake manifold back towards the passenger compartment where it makes a 180 and then runs forward where there is a short rubber coupling. It’s definitly the cooler line, however it’s been deleted, so it’s strictly a small diameter coolant line.
My question is, how does that metal line attach to the intake? It feels like that line is not seated all the way ( I can feel a shoulder about an 1/8 below the manifold). Does it just push in and is retained by the o ring? I am trying to avoid pulling the manifold, if I have to I will. I’ve never really worked on diesels, honestly a bit intimidated.
I can add pics in the morning if my description is lacking.
Thank you you all in advance.
Last edited by schadenfreude70; Mar 10, 2019 at 05:19 PM.
Reason: New info
Theres two bolts that through bolt the intake to hold the bypass kit tube in place. It is sealed with 2 o-rings, one for the plate and one for the tube.
If you choose to remove it drain about 2 gallons of coolant out first from the petcock on the bottom of the radiator on the driver's side.
He said he changed all the o rings, including changing the entire intake manifold and donut, however, nothing looks touched. The oil spray from the cracked MAP sensor hose is everywhere and pretty easy to tell if the stuffs been removed. Maybe he did and pinched an o ring on the reinstall, I don’t know. Just easier to fix it myself at this point.
The problem I’m finding is very few shops want to touch the 6.0l or maybe it’s just the diesel, not sure which. There are shops by me that flat out refused to even look at it.
Thank you all though. Im going to keep digging, gotta get to the bottom of the leak.
Mine's not deleted, but from the pic it looks like the stock EGR cooler hose is used even on the adapter.
If so, turbo doesn't need to be removed. It's a little tight in there but doable.
Here's what I did.
Cut the old tube in two, then the part that's on the EGR cooler side can be pushed back enough to get the other side off.
The connection on top of the oil cooler has to be turned 90 deg. then it'll slide off, or, you can just take the cap on top of the oil cooler off and remove the hose once you get it out of the engine compartment.
The cap on the oil cooler has an o ring in it, so it can make it hard to pry it off. I used a tiny L shaped nail puller on one side and a flat screwdriver on the other side of the cap and pried it up. Best to replace the o ring if you can. I didn't but it's holding up fine.
When you get the new hose, lube it up, put it on the cap side first, then slide it on the EGR delete tube and screw the cap down.
It took me about an hour to do, but I'm slow.
Good Luck.,
Thank you all for your help. I got the deleted line out and low and behold, the smaller o ring was pitted and brittle. Have not found the correct replacement yet, but I am confident that I found the cause of the leak.
Thank you all for your help. I got the deleted line out and low and behold, the smaller o ring was pitted and brittle. Have not found the correct replacement yet, but I am confident that I found the cause of the leak.
Glad you got to the cause. You can find universal HBNR o-ring kits for cheap and maybe match it up. Lube it upon install with motor oil or such.
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