The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 10-10-2012, 12:12 AM   #1
magwakeenercew2jh
RAT1968 '68 Cab/'71 Parts
 
magwakeenercew2jh's Avatar
 
Join Date: Feb 2002
Location: Coarsegold, CA
Posts: 2,375
Vented Gads Cap

If I have a vented tank, do I need a vented gas cap?

The vent is clear and open.

As most know, the vent line is a hard line that runs from the top of the tank (behind the passenger's head) up the passenger's side corner,
looping back down and then exiting thru the floor. From there, after a short length of rubber hose, it twins up with the hard fuel "supply line" along
the frame rail.......until the supply line branches off to the fuel pump at the front of the frame. I believe that the vent tube originally went into a charcoal filter...
I just have mine open pointing toward the right and into the atmosphere.

I finally found an unvented cap that keeps the gas from sloshing out of the fuel filler hole. So, the question remains...Does this set up require a vented cap to avoid
some kind of vacuum-caused gas-flow problem?

Or do I just happily run with a sealed filler, relying on the vent to keep everything flowing properly?

Or do I need to know something else that I'm missing?
Attached Images
 
__________________
M17
Coarsegold, CA
RAT's shiny now.
But always a rat.
magwakeenercew2jh is offline   Reply With Quote
 

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 11:13 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com