12-05-2010, 09:03 PM | #1 |
It'll Buff Out!
Join Date: Apr 2007
Location: San Diego
Posts: 603
|
Fuel sock Question
I pulled the Tank and my Fuel strainer sock is black with only a spot about the size of a dime looking like it was pulling fuel. I see LMC has the sending unit but not the sock, does anyone know if I order the sending unit does it come with one? Also can I just not install the sock and reconnect my filter between the pump and tank or am I going to be back to Vapor lock issues.
Thanks
__________________
"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
12-05-2010, 09:31 PM | #2 |
Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
|
Re: Fuel sock Question
IIRC it comes with the sock. I left the sock off when I replaced mine. I have a filter on the fuel line before the fuel pump and the one in the carb which I change about every 3-4 months. I figured it's easier to change those.
|
12-05-2010, 10:41 PM | #3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
|
Re: Fuel sock Question
if vapor lock is an issue, then you want as few restrictions before the pump, this means no filters and no sock.
I personally don't understand why the hell anyone would want a sock in the tank anyways. I would MUCH rather replace a filter under the hood than pulling the seat and opening the tank. Last edited by Longhorn Man; 12-06-2010 at 12:52 AM. |
12-05-2010, 10:44 PM | #4 |
It'll Buff Out!
Join Date: Apr 2007
Location: San Diego
Posts: 603
|
Re: Fuel sock Question
__________________
"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB Last edited by So.Cal.Super; 12-05-2010 at 11:00 PM. Reason: pic loading problems |
12-05-2010, 11:15 PM | #5 |
It'll Buff Out!
Join Date: Apr 2007
Location: San Diego
Posts: 603
|
Re: Fuel sock Question
thanks Andy,
let me back track with a little more info on the vapor lock. two years ago I added a nice frame mounted filter between the tank and pump and ran it for a year before I had a problem. I also had no Idea the sock was this bad. I have the in carb filter but would love to leave the sock off and re connect the better filter. let me know if you have any more thoughts with a bit more info. I also have a new pump and regulator with gauge on the truck now. thats how I saw the problem of fuel PSI dropping the longer I revved the truck. once I ran out of fuel in the line she was falling on her face. filter specs Fuel Filter Style Canister Inlet Quantity One Inlet Size 3/8 in. Inlet Attachment Female threads Outlet Quantity One Outlet Size 3/8 in. Outlet Attachment Female threads Filter Element Included Yes Smallest Particle Filtered 10 microns Filter Element Material Fabric Filter Housing Material Aluminum Filter Housing Finish Red anodized/Nickel plated Overall Length (in) 6.125 in. Outside Diameter (in) 3.250 in. Mounting Bracket Included Yes Fittings Included No Clamps Included No Maximum Fuel Pressure (psi) 200 Quantity Sold individually. Thanks
__________________
"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
12-05-2010, 11:19 PM | #6 |
It'll Buff Out!
Join Date: Apr 2007
Location: San Diego
Posts: 603
|
Re: Fuel sock Question
__________________
"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
12-06-2010, 12:07 AM | #7 |
The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,774
|
Re: Fuel sock Question
-
If you decide you want to use the sock go to your GM dealer and order #5651705. I think it was about 15 bucks when I ordered mine... LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
12-06-2010, 12:53 AM | #8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
|
Re: Fuel sock Question
I've ripped mine off of every truck I've owned
We all know that if you increase pressure, you increase the boiling point. That's why we pressurize the rad, to keep the coolant from boiling at 212 degrees (talking straight water) Now, if you decrease the pressure, then you are decreasing the boiling point. Any restriction between the pump and the tank will cause a decrease in pressure, just like when your milkshake is too thick and you suck so hard that the straw colapses. Vapor lock is nothing more than boiling gas in the fuel line and/or in the carb. Reduce the number of restrictions in the fuel line before the pump, and you reduce the odds of boiling the fuel. That sock was certinaly a restriction, and did in fact reduce the boiling point, and MIGHT have been the vapor lock issue. Throw it away and put the tank back together. Install a quality filter after the pump (like the one you described above) and call it a day. With your guage you will probably see the improvement Last edited by Longhorn Man; 12-06-2010 at 12:59 AM. |
12-06-2010, 01:41 AM | #9 |
It'll Buff Out!
Join Date: Apr 2007
Location: San Diego
Posts: 603
|
Re: Fuel sock Question
Thanks everyone, I will write down that part number for future ref.
__________________
"Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB |
12-06-2010, 07:38 AM | #10 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: Fuel sock Question
i've made fuel socks out of stainless steel mesh, have also run quite a few vehicles without them
lots of "vapor lock" issues are due to poor or no venting of gastanks lazyman rubber fuel lines layin on manifolds too edelbrock carbs without phenolic spacers too
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 12-06-2010 at 09:33 AM. |
12-06-2010, 09:17 AM | #11 |
Registered User
Join Date: Aug 2009
Location: Denver, CO
Posts: 291
|
Re: Fuel sock Question
I finally got off my butt and cleaned out my tank with acid and powerwasher. It made all the difference in the world. Then you can do like the mighty longhornman says and ditch the sock without any worries.
__________________
__________________________________________ Sean 1972 C20 2005 4Runner |
12-06-2010, 05:32 PM | #12 |
Registered User
Join Date: Dec 2004
Location: Arvada Colorado
Posts: 1,321
|
Re: Fuel sock Question
I had a feed problem from my rear tank on my C20 since I bought it from the PO. It would run fine for a while and then act as if it were running out of fuel. He even installed an electric fuel pump wired to a toggle switch to try to solve the problem. It still did it. Mostly happened on the highway. Took the tank out and found a sock like the one pictured....in very bad condition. Tossed it, cleaned out the tank and put it back together. It feeds perfectly now...no need to even turn on the electric pump anymore. I didn't think that the sock could have restricted it but it appears as though that was the problem on my truck.
__________________
Larry 1949 Willys CJ2A, Kubota Turbo Diesel engine, Warn Overdrive, 11 inch brakes, 12volt, Warn M8000 Winch "Little Green" 1970 Rustoleum Roller Red C20 Custom Camper 454 TH400 "Big Red" 1971 K20 6.2 Turbo Diesel 4x4 4spd Ranger Overdrive "Pumpkin Wagon" 2005 VW Beetle Diesel 44+ MPG "Silver Bullet" |
05-02-2011, 06:16 PM | #13 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 1,108
|
Re: Fuel sock Question
A partially clogged fuel sock in and of itself would be a small restriction, but an even larger restriction would be if a piece of a deteriorated sock found its way into the fuel inlet line.
I had that happen one time on an old Camaro. If you pull your fuel sender assembly and find only part of your original sock, chances are that it has migrated into the lines. NoNeck
__________________
2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND. Last edited by NoNeck; 05-02-2011 at 06:16 PM. |
01-26-2015, 05:24 PM | #14 |
Registered User
Join Date: Aug 2014
Location: Maple Valley, WA
Posts: 83
|
Re: Fuel sock Question
ClassicParts.com sells the sock by itself. Part #23-598 (3/8") for $11.95 and Part #23-599 (5/16") for $14.95.
__________________
1972 GMC 1/2 Ton Long Bed 350 My build: http://67-72chevytrucks.com/vboard/s...73#post6961273 |
01-26-2015, 07:28 PM | #15 |
Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,976
|
Re: Fuel sock Question
Ditch the sock. I think it causes more problems than it solves.
|
01-26-2015, 07:54 PM | #16 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,189
|
Re: Fuel sock Question
I haven't had a problem with the fuel sock, and think these fuel systems could use all the help they can get with filtering out contaminates. While I understand they do deteriorate, it's not as if they fall apart in a year. It has taken me all of 15 minutes to switch out the sock. I think it's something that is neglected, and shouldn't have been left to sit in a truck unmonitored for 45 years.
|
01-26-2015, 10:40 PM | #17 | ||
The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,774
|
Re: Fuel sock Question
Wow, I forgot about this thread. Might be good to bring it back up though....
Quote:
Quote:
AMEN to that! LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
||
Bookmarks |
Thread Tools | |
Display Modes | |
|
|