Vent line smoking?
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Vent line smoking?
Hi, evry1.
I just bought a 03 Excursion with a 7.3.
The first day while driving it for 30 miles or so. I was parked, and the engine was running. I was walking behind the truck and noticed that there was smoke coming from the rear drivers side. I looked and it was coming from what looks like a rubber vent line. Is this normal??
thanks !
I just bought a 03 Excursion with a 7.3.
The first day while driving it for 30 miles or so. I was parked, and the engine was running. I was walking behind the truck and noticed that there was smoke coming from the rear drivers side. I looked and it was coming from what looks like a rubber vent line. Is this normal??
thanks !
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
Hi, evry1.
I just bought a 03 Excursion with a 7.3.
The first day while driving it for 30 miles or so. I was parked, and the engine was running. I was walking behind the truck and noticed that there was smoke coming from the rear drivers side. I looked and it was coming from what looks like a rubber vent line. Is this normal??
thanks !
I just bought a 03 Excursion with a 7.3.
The first day while driving it for 30 miles or so. I was parked, and the engine was running. I was walking behind the truck and noticed that there was smoke coming from the rear drivers side. I looked and it was coming from what looks like a rubber vent line. Is this normal??
thanks !
You need to define where the hose is from, If it's the axle you need to drain the differential and install new fluid as the evidence,steam, indicates water is in the dif., water in the dif will cause all kinds of problems so change the gear lube now.
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
Roger that, I didn't even consider the rear heater hoses.
Super Moderator
Joined: May 2004
Posts: 29,380
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From: Central Coast of CA
I think you misunderstand. It's not a standard item. There aren't any heater hoses like this in the rear of the Ex.
If it's like Don has surmised, and this is indeed the CCV mod (which like Don has suggested, and both Nick and I agree on) the heater hose in question is routed from the dog house on the drivers side valve cover of the 7.3L, over the brake master cylinder, down the engine compartment to the underside of the vehicle, and out back towards the rear of the Ex. Some guys who do this mod stop about halfway back (that's how I have it on my F250) and some guys will take it all the way to the rear axle.
With this mod, you will have oil vapor (smoke) venting to the atmosphere instead of being routed back to the engine, where it coats the connecting boots, pipes, inside of the turbo assembly, and the intercooler, making a mess.
It also keeps the engine compartment from becoming (over time) coated with oily dirt.
Here's a picture tutorial Chris put up when he did the mod (and the added catch can he decided to fab up) on his truck.
https://www.ford-trucks.com/forums/8...with-pics.html
Stewart
If it's like Don has surmised, and this is indeed the CCV mod (which like Don has suggested, and both Nick and I agree on) the heater hose in question is routed from the dog house on the drivers side valve cover of the 7.3L, over the brake master cylinder, down the engine compartment to the underside of the vehicle, and out back towards the rear of the Ex. Some guys who do this mod stop about halfway back (that's how I have it on my F250) and some guys will take it all the way to the rear axle.
With this mod, you will have oil vapor (smoke) venting to the atmosphere instead of being routed back to the engine, where it coats the connecting boots, pipes, inside of the turbo assembly, and the intercooler, making a mess.
It also keeps the engine compartment from becoming (over time) coated with oily dirt.
Here's a picture tutorial Chris put up when he did the mod (and the added catch can he decided to fab up) on his truck.
https://www.ford-trucks.com/forums/8...with-pics.html
Stewart
Elder User
Joined: Mar 2008
Posts: 626
Likes: 0
From: Ontario, CA
I think you misunderstand. It's not a standard item. There aren't any heater hoses like this in the rear of the Ex.
If it's like Don has surmised, and this is indeed the CCV mod (which like Don has suggested, and both Nick and I agree on) the heater hose in question is routed from the dog house on the drivers side valve cover of the 7.3L, over the brake master cylinder, down the engine compartment to the underside of the vehicle, and out back towards the rear of the Ex. Some guys who do this mod stop about halfway back (that's how I have it on my F250) and some guys will take it all the way to the rear axle.
With this mod, you will have oil vapor (smoke) venting to the atmosphere instead of being routed back to the engine, where it coats the connecting boots, pipes, inside of the turbo assembly, and the intercooler, making a mess.
It also keeps the engine compartment from becoming (over time) coated with oily dirt.
Here's a picture tutorial Chris put up when he did the mod (and the added catch can he decided to fab up) on his truck.
https://www.ford-trucks.com/forums/8...with-pics.html
Stewart
If it's like Don has surmised, and this is indeed the CCV mod (which like Don has suggested, and both Nick and I agree on) the heater hose in question is routed from the dog house on the drivers side valve cover of the 7.3L, over the brake master cylinder, down the engine compartment to the underside of the vehicle, and out back towards the rear of the Ex. Some guys who do this mod stop about halfway back (that's how I have it on my F250) and some guys will take it all the way to the rear axle.
With this mod, you will have oil vapor (smoke) venting to the atmosphere instead of being routed back to the engine, where it coats the connecting boots, pipes, inside of the turbo assembly, and the intercooler, making a mess.
It also keeps the engine compartment from becoming (over time) coated with oily dirt.
Here's a picture tutorial Chris put up when he did the mod (and the added catch can he decided to fab up) on his truck.
https://www.ford-trucks.com/forums/8...with-pics.html
Stewart
Great detail!!! I'm at work, and couldn't do the search for all the info on it!! I tried to rep you, but I'm told i"ve got to spread some around.
Thanks!!!
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Thanks,, sounds like that is what it is. I have not traced it out yet, but it was more an oil vapor then smoke.
The rubber hose was about 1" in diameter and come down behind the driver side rear wheel.
I will check it out tomorrow.
Peace
The rubber hose was about 1" in diameter and come down behind the driver side rear wheel.
I will check it out tomorrow.
Peace
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