CCV removal = pressure buildup?
Thread Starter
|
Senior User
Joined: Dec 2005
Posts: 104
Likes: 0
CCV removal = pressure buildup?
I thought I would try the CCV reroute and simply remove the plastic piece in the air tube, capped the hole and flipped the plastic piece around and stuck a length of 1" hose over it and routed it beside the engine and past the axle. Well, I then noticed smoke out my pipe, mostly whitish blueish smoke and oil dripping out of my down pipe, on the engine leaving a puddle. I talked to a friend who deals with mostly 7.3's and said if you do that on a 7.3 they can build up pressure in the crankcase and blow the oil pan gaskets out and the valve cover gaskets out. He said the CCV system needs a slight vacuum for the "valve" to open and let the CC gases out into the intake. I thought he was crazy, but I returned my truck to "stock" and the dripping oil and smoke stopped. I guess I was building up crankcase pressure and it was not allowing the oil to drain into the turbo drain tube and out the seal? Anyone heard of this????
Thanks!
Thanks!
Fleet Owner
Joined: Nov 2003
Posts: 27,901
Likes: 3,617
I have the ccv vent routed through a filter and back to the turbo inlet. I routinely measure the crankcase pressure and it is completely within specification (0.3 psig).
Does your 1" line have a low spot in it that can collect moisture and become a blockage?
Does your 1" line have a low spot in it that can collect moisture and become a blockage?
Elder User
Joined: Dec 2004
Posts: 944
Likes: 0
From: Happy Valley, Oregon
Bismic, does it really need a vacuum? On our big trucks it was always vented out the bottom of the motor into the air through a tube.
I unhooked mine and just ran it through a 1" tube down the side of the engine on the outside of the frame rail. Seems to be working fine. Will I have a future problem. Only have a couple of thousand miles on it since I changed it.
I unhooked mine and just ran it through a 1" tube down the side of the engine on the outside of the frame rail. Seems to be working fine. Will I have a future problem. Only have a couple of thousand miles on it since I changed it.
Elder User
Joined: Oct 2004
Posts: 585
Likes: 1
From: Ct.
I have done the ccv a 1 inch hose to back of the truck. durning the winter some condenstion build up in the hose and froze this cause pressure to build up and blew out the oil seal in the turbo. and smoked like hell. now I just have the hose to the bottom of the cab.
Thread
Thread Starter
Forum
Replies
Last Post
SRBF150
1999 - 2003 7.3L Power Stroke Diesel
21
Apr 9, 2016 09:21 PM
