1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

Fuel Tank Vent

Thread Tools
 
Search this Thread
 
  #1  
Old 01-05-2013, 11:02 PM
Poolguy601's Avatar
Poolguy601
Poolguy601 is offline
Senior User
Thread Starter
Join Date: Sep 2011
Location: Delaware
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Fuel Tank Vent

Is the fuel cap the vent for the tank.
 
  #2  
Old 01-05-2013, 11:44 PM
binuya's Avatar
binuya
binuya is offline
Fleet Mechanic

Join Date: Nov 2008
Location: Seattle
Posts: 1,573
Received 4 Likes on 4 Posts
There are two vent hoses on top of the fuel tank. I believe the cap is a sealed unit.
 
  #3  
Old 01-06-2013, 06:07 AM
Poolguy601's Avatar
Poolguy601
Poolguy601 is offline
Senior User
Thread Starter
Join Date: Sep 2011
Location: Delaware
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
I saw them. But they are connected together.
 
  #4  
Old 01-06-2013, 06:58 AM
koski19's Avatar
koski19
koski19 is offline
Senior User
Join Date: Sep 2009
Posts: 341
Likes: 0
Received 0 Likes on 0 Posts
When I dropped my tank there are two vents on the top of the tank.
I removed each, cleaned and re-installed.

Jeff
 
  #5  
Old 01-06-2013, 07:24 AM
Tugly's Avatar
Tugly
Tugly is offline
Hotshot
Join Date: Jan 2011
Location: Columbia River
Posts: 18,797
Received 111 Likes on 66 Posts
I'll get more precise here. When the tank is full and you're driving around, sloshing can aerate the fuel. There is a tube that goes from the front of the tank to the back of the tank to help trapped air balance out, reducing the aeration. There is a fill hose and a vent hose, they both go up to the fill spout and join there.
 
  #6  
Old 01-06-2013, 12:18 PM
Bigtruc's Avatar
Bigtruc
Bigtruc is offline
Senior User
Join Date: Jun 2012
Posts: 256
Likes: 0
Received 0 Likes on 0 Posts
When I dropped my tank to do my hutch & harpoon mods I noticed the spots for the front & rear vents but there is nothing hooked to them, they were capped off. Is this right?
 
  #7  
Old 01-06-2013, 12:57 PM
crop harvester's Avatar
crop harvester
crop harvester is offline
Fleet Mechanic
Join Date: Jul 2011
Posts: 1,667
Likes: 0
Received 3 Likes on 3 Posts
you will need to vent somewhere.may be some body modified the cap or something I would be investigating.
 
  #8  
Old 01-06-2013, 03:47 PM
binuya's Avatar
binuya
binuya is offline
Fleet Mechanic

Join Date: Nov 2008
Location: Seattle
Posts: 1,573
Received 4 Likes on 4 Posts
Unless I am wrong here, my understanding is that the fuel coming in from the return line is all that is needed to relieve any pressure imbalance. Closed loop.
 
  #9  
Old 01-06-2013, 05:20 PM
Poolguy601's Avatar
Poolguy601
Poolguy601 is offline
Senior User
Thread Starter
Join Date: Sep 2011
Location: Delaware
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Tugly
I'll get more precise here. When the tank is full and you're driving around, sloshing can aerate the fuel. There is a tube that goes from the front of the tank to the back of the tank to help trapped air balance out, reducing the aeration. There is a fill hose and a vent hose, they both go up to the fill spout and join there.
So the cap is the vent
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
F1 coyote
1948 - 1956 F1, F100 & Larger F-Series Trucks
4
05-05-2020 09:32 PM
EightGodzillas
1973 - 1979 F-100 & Larger F-Series Trucks
9
05-16-2017 03:29 PM
lunatech
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
5
05-27-2008 10:41 PM
6.0 Rules
6.0L Power Stroke Diesel
10
05-16-2007 01:19 AM
76 F250 4X4
1973 - 1979 F-100 & Larger F-Series Trucks
6
11-10-2003 01:00 AM



Quick Reply: Fuel Tank Vent



All times are GMT -5. The time now is 07:00 PM.