There’s a hard line on the back side of the intake manifold. I forget what it’s for but reach back there and see if it’s loose. I believe you can reach it with the intake on. Mine come off a while back and all I could hear was hissing.

 

There’s a hard line on the back side of the intake manifold. I forget what it’s for but reach back there and see if it’s loose. I believe you can reach it with the intake on. Mine come off a while back and all I could hear was hissing.

EBP sensor tube.

Hi, I'm new here I have a 2015 6.7 with 60k on it. It was running fine a then I was getting on the highway and I started hearing a loud hissing and noticed a loss of power. I also noticed that the turbo was boosting very easily and not going above 20 psi. I got home and checked all the connections on the cold side to see if I blew a hole in a pipe or a connection came apart and nothing. I have a feeling that it might be on the hot side but I'm new to the 6.7's, I have a smoke machine with all the fittings, caps, etc. what I need it some info on the best way to find out where it's leaking. Any suggestions ? Or anyone run into the same issue ? Oh and the truck is completely stock.

Any codes?

 

EBP sensor tube.

Yup. That’s it.

 

Hello John and welcome to the forum from N.E. Indiana!!!!

 

If turbo spools up, your exhaust is likely good. Did you physically pull the cold side pipe off? It's REALLY hard to see without pulling it. I'd be doing that first before taking time to do anything else.

 

Yes I pulled the cold side apart cleaned all the joints and put it back together. Still have the same issue

 

The turbo does spool up but it sounds and feels like it's freewheeling. It spools up with very little throttle and sounds like it's just pissing out somewhere and doesn't spool past 15-18psi. I don't see any black soot anywhere or greasy oily spots under the hood.

 

Hi, Everyone So I pulled apart one of the pipes on the cold side in-between the intake from the throttle body and the water to air intercooler and smoke tested both sidez and ended up fixing a crack in the plastic pipe that comes off the throttle body you couldn't see it because it's not a rigid plastic and was only opening under pressure. It is about a 2" long crack that when you squeeze the pipe you will see it open. Even if you push on it the crack opens up big. It amazes me how Ford can use such cheap materials on such well designed engine. Luckily I already had the upgraded billet pipes for that section sitting iny garage. Thank God it was a quick fix and not invasive or costly. Most interestingly there wasn't and oil around the crack which I found strange.
Thanks to all that helped
Much appreciated
John C.

 

Hi, Everyone So I pulled apart one of the pipes on the cold side in-between the intake from the throttle body and the water to air intercooler and smoke tested both sidez and ended up fixing a crack in the plastic pipe that comes off the throttle body you couldn't see it because it's not a rigid plastic and was only opening under pressure. It is about a 2" long crack that when you squeeze the pipe you will see it open. Even if you push on it the crack opens up big. It amazes me how Ford can use such cheap materials on such well designed engine. Luckily I already had the upgraded billet pipes for that section sitting iny garage. Thank God it was a quick fix and not invasive or costly. Most interestingly there wasn't and oil around the crack which I found strange.
Thanks to all that helped
Much appreciated
John C.

Yes, they always crack there.