Changing soft fuel line from tank on C/K - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 08-23-2012, 06:33 AM
Registered User
 
Last photo:
Join Date: Oct 2011
Location: greensboro, nc
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Changing soft fuel line from tank on C/K

When I was doing some work under the truck ( 1982 c-10) during the engine rebuild process I noticed the soft fuel lines that join the hard lines coming from the fuel tank and hard lines that run along the passenger side of the frame are looking pretty bad. I suspect they are the original 30 year old lines.
Is there a procedure for changing them with fuel in the system without removing the tank? If I need to drop the tank I'll go ahead and put in a new sending unit since the fuel guage isn't that accurate anymore.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-23-2012, 07:09 AM
Registered User
 
Join Date: Oct 2010
Location: Sellersburg IN
Posts: 66
Wiki Edits: 0

Thanks: 1
Thanked 2 Times in 2 Posts
If you can get to the lines without dropping the tank I would change them in place. But it may also be a good time to drop that old tank, remove 30 years of trash inside and change that inaccurate sending unit.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-23-2012, 08:28 AM
Registered User
 
Last photo:
Join Date: Oct 2011
Location: greensboro, nc
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
changing fuel lines on c/k

I've put in another fuel filter before the fuel pump in the engine bay to to trap any larger particles. I'd like to just replace the lines right now and spread the cost out if I can.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-23-2012, 05:58 PM
Registered User
 
Join Date: May 2012
Location: Foresthill Ca.
Posts: 35
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Think about taking the bed off. 4-6 bolts elect. plug in the back.
Now you can stand there and change all parts

Frank
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-24-2012, 08:58 AM
ogre's Avatar
the 'Duracell Project'
 
Last photo:
Join Date: Nov 2009
Location: Motown
Posts: 1,372
Wiki Edits: 0

Thanks: 0
Thanked 92 Times in 85 Posts
old rubber lines get soft from the methanol added to new gas
i'd change every soft line on your truck to methanol resistant lines
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-28-2012, 07:52 AM
Registered User
 
Last photo:
Join Date: Oct 2011
Location: greensboro, nc
Posts: 36
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
soft lines on C/K

Good point about the alcohol and the old lines. I'll add that to the list. Thanks for everyones input.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-28-2012, 05:34 PM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,331
Wiki Edits: 0

Thanks: 1
Thanked 14 Times in 12 Posts
Remove the bed---much easier to deal with the lines with the bed outta the way.
Been there -- done that
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 10-07-2012, 01:09 PM
Jim Rockford's Avatar
World Famous VF-14
 

Last journal entry: Cleaned it up...
Last photo:
Join Date: Dec 2008
Location: Virginia
Age: 42
Posts: 411
Wiki Edits: 0

Thanks: 10
Thanked 0 Times in 0 Posts
when you do remove the sending unit, you will more than likely find the inside of the take to be as clean as the day it was made, Unless the truck sat up for a long time with the cap off the filler tube, gas pumps have really great filters on em, they are 50% better than your factory fuel filter on the truck.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 10-13-2012, 07:14 AM
Registered User
 
Join Date: Aug 2006
Location: Alexandria, VA
Posts: 1,747
Wiki Edits: 0

Thanks: 4
Thanked 64 Times in 62 Posts
I've been working on the soft fuel lines for my 1975 GMC K25 with dual tanks, and its generally a PIA. Does anyone make a real high quality soft line that will hold up? OEM lines get 30 plus years old and are then just starting to go bad, but the replacement lines from the parts store seem to go soft after only about five years. I've had my truck ten years and I am on a 2nd round of replacing various rubber fuel lines.

Removing the bed provides the best access, but I've also tried just raising the front of the bed up about 6 inches to provide some clearance. This works fairly well to access it from under the truck, but the bed gets in the way of good side access unless you slide it back along the frame. By the time you get enough clearance you might consider removing the bed. However, then you need somewhere to put the bed, which is not that easy.

I have also tried dropping the tank, which works okay if there isn't much gas in the tank. I put a 6" wide board under the tank and a hydraulic floor jack under it. If you get the balance right you can let the tank down slowly after you remove the 8 bolts that hold the brackets to the frame. An empty tank is fairly easy to hold up manually if you are just pulling it out, but hard to hold in the right place by hand as you bolt it back in.

Bruce
Reply With Quote Quick reply to this message

Recent General Rodding Tech posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Chevy 5.7L TBI fuel tank venting and return line Infinite Monkeys Engine 2 01-20-2012 04:00 PM
fuel tank vent line whojohnjones Engine 0 04-17-2011 12:12 PM
Could It be my Fuel Tank / Fuel Line? 10mikeymike Engine 4 09-17-2008 02:25 PM
Fuel tank vent line crash Engine 8 12-01-2005 07:27 PM
Fuel Tank Vapor line DoubleVision Engine 1 03-17-2004 04:47 AM


All times are GMT -6. The time now is 08:31 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.