Go Back  CorvetteForum - Chevrolet Corvette Forum Discussion > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Reload this Page >

anyone replaced the fuel tank purge/vent line with rubber?

Notices
C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

anyone replaced the fuel tank purge/vent line with rubber?

 
Old 02-04-2019, 11:57 AM
  #1  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default anyone replaced the fuel tank purge/vent line with rubber?

My vent line on the 86 is rotted out and a PO must have pinched it shut.. I can see it up beside the rear driver wheel between the abs pump tub and the frame.

I am doing some bumper work right now and I thought I'd just replace the entire line all the way to the cannister. The gas tank pressures up right now and fumes are escaping out this broken vent line.

i could just slip a piece of rubber over this broken line and clamp it...but i'm 100% certain that the line will have corrosion and be plugged elsewhere in the line so I am replacing the whole thing.


There is some really nice nylon or stainless braided rubber fuel line made for todays fuel available and it would be extremely easy to run this from the vent fitting along the same pathing. Anybody?

I know in the past people have been burned by rubber braided lines but my understanding is that modern line is not comprised in the same way.

VT.

And to be honest, I am looking at doing the sending and return fuel lines the same way, from the tank, to the filter. They were replaced in the past by copper lines and look real shady.
VikingTrad3r is offline  
Old 02-06-2019, 11:21 AM
  #2  
Bfenty
CF Senior Member
 
Bfenty's Avatar
 
Member Since: Mar 2017
Location: Nashville TN
Posts: 1,386
Thanked 75 Times in 72 Posts
2017 C4 of Year Finalist
Default

I'm interested in how this works out.
Bfenty is offline  
Old 02-06-2019, 11:54 AM
  #3  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default

whats funny is that 3/4 c4's ive worked on have had this vent line severed. all in the same spot.

2 crushed from impropper jacking

1 from rusting out.

on the current example, rusted out, i *know* that ill have a bunch of other stuff to repair along the way. likely the charcoal cannister and the vent solenoid to the vacuum line. and the vacuum line.

VikingTrad3r is offline  
Old 02-06-2019, 08:47 PM
  #4  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default

bit of research shows me that PTFE hoses are the only hoses to use.

rubber and nitrile braided hoses say "do not run inside the car as they can weep fuel". wtf. i will pass on those even outside the car.

So IF u go braided it looks like the ptfe and thier fittings are the way to go.

that said, im going to price out solid lines as its going to cost me alot of time building the braided ptfe hoses.

vt
VikingTrad3r is offline  
Old 02-09-2019, 08:00 PM
  #5  
cmontel727
CF Senior Member
 
cmontel727's Avatar
 
Member Since: May 2004
Location: Newton NJ
Posts: 287
Thanked 3 Times in 3 Posts
Default

Have you explored using nylon lines much like the newer cars use to handle fuel vapors. Might be a little more cost effective. I think kits are available from Jegs or Summit.
cmontel727 is offline  
Old 02-09-2019, 08:54 PM
  #6  
eutu1984
CF Senior Member
Support Corvetteforum!
 
eutu1984's Avatar
 
Member Since: Jul 2009
Location: Ashland PA
Posts: 980
Thanked 35 Times in 34 Posts
Default

I used plastic line I believe pvc or something, ran from we're it connects to by the fuel tank all the way to the engine bay.
eutu1984 is offline  
Old 02-09-2019, 09:13 PM
  #7  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default

thnx ill look into nylon and pvc.
VikingTrad3r is offline  
Old 02-09-2019, 09:20 PM
  #8  
eutu1984
CF Senior Member
Support Corvetteforum!
 
eutu1984's Avatar
 
Member Since: Jul 2009
Location: Ashland PA
Posts: 980
Thanked 35 Times in 34 Posts
Default

eutu1984 is offline  
Old 02-09-2019, 10:02 PM
  #9  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default

Originally Posted by eutu1984 View Post
winner.

this is for vent line right?

where did you tie in and what were your connections made from?
VikingTrad3r is offline  
Old 02-09-2019, 10:56 PM
  #10  
eutu1984
CF Senior Member
Support Corvetteforum!
 
eutu1984's Avatar
 
Member Since: Jul 2009
Location: Ashland PA
Posts: 980
Thanked 35 Times in 34 Posts
Default

Originally Posted by VikingTrad3r View Post
winner.

this is for vent line right?

where did you tie in and what were your connections made from?
I removed the fuel filler door and removed the old line, I ordered the same size line and snaked it through, used tie wraps were I ran it underneath up to the engine compartment. was a pain if I remember right to remove old line and snake the new line but not to bad. I am sick right now with sinus infection if I feel better tomorrow I will go out to the garage and take some pics.
eutu1984 is offline  
Old 02-10-2019, 02:55 AM
  #11  
VikingTrad3r
CF Senior Member
Support Corvetteforum!
Thread Starter
 
VikingTrad3r's Avatar
 
Member Since: Apr 2014
Posts: 4,617
Thanked 371 Times in 350 Posts
Default

Originally Posted by eutu1984 View Post
I removed the fuel filler door and removed the old line, I ordered the same size line and snaked it through, used tie wraps were I ran it underneath up to the engine compartment. was a pain if I remember right to remove old line and snake the new line but not to bad. I am sick right now with sinus infection if I feel better tomorrow I will go out to the garage and take some pics.
dont worry bout the pics. get well soon!

im going to order the black stuff.
VikingTrad3r is offline  

Thread Tools
Search this Thread
Quick Reply: anyone replaced the fuel tank purge/vent line with rubber?


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: