![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Jan 2009
Location: MT JULIET, TN
Posts: 40
|
Who makes a non-leaking gas cap??!!
Where can a man get a gas cap for an original non-vented behind the seat tank. I ordered one from lmc for my 67, but it leaks as well. Argh!! What have ya'll done to correct this issue? Thanks in advance and take care.
|
![]() |
![]() |
![]() |
#2 |
Registered User
![]() Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,522
|
Re: Who makes a non-leaking gas cap??!!
Don't top off the tank after the pump shuts off. You have to leave a bit of expansion and slosh room. Also I always thought that all of the trucks with seat tanks used vented caps. I may be wrong on that but I don't think so.
|
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Jul 2010
Location: Las Vegas, Nevada
Posts: 43
|
Re: Who makes a non-leaking gas cap??!!
Got mine at Auto Zone, works just like it's supposed to. My 72 is a non vented tank.
Dan |
![]() |
![]() |
![]() |
#4 |
Project Junkie! Fishing Poor!!
![]() Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
|
Re: Who makes a non-leaking gas cap??!!
71/72 use a vented cap. 67-70 doesn't. Usualy if you can find the stant locking cap that will stop the leak. Those have to be pushed on against a thicker seal to lock. What you need to remember is your tank is over 40 years old and the lip that the dogs of the cap ride on are warn down a little so a thicker seal is needed. WES
__________________
On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
![]() |
![]() |
![]() |
#5 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,648
|
Re: Who makes a non-leaking gas cap??!!
Got my locking cap at NAPA, no leaks. It's actually the second one from them.... the rubber in first one eventually rotted, but it had lasted about 20 years or so.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Aug 2007
Location: Redwood City, CA
Posts: 1,177
|
Re: Who makes a non-leaking gas cap??!!
What's worked for me on the older gas tanks is to buy two caps at your local parts store (they're cheap) take the seal off one, add it to the other to create a thicker seal, I have no leaks and it's still going strong. Another option is to remove the rubber seal, carefully add a bead of high temp gasket sealer, let it set and dry, re-add the rubber seal, makes for a nice leak proof seal.
__________________
66 GMC Suburban Custom 66 Chevy K10 Suburban |
![]() |
![]() |
![]() |
#7 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: Who makes a non-leaking gas cap??!!
try getting the correct vented cap first as there is a difference in how they seal// most any autopartsstore can get you may have to wait a day or so
they had vented caps thru 70 // 71 72 nonvented with the charcoal cannister thing to vent the tank//that's what i've always been told and seen
__________________
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; 09-14-2010 at 02:16 PM. |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Jul 2010
Location: Las Vegas, Nevada
Posts: 43
|
Re: Who makes a non-leaking gas cap??!!
Interesting, here in Nevada they made me get a non vented cap to pass smog. So now I am wondering what really was stock vented or non vented?
|
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Sep 2008
Location: Cornelius Oregon
Posts: 1,073
|
Re: Who makes a non-leaking gas cap??!!
I just got done with my Sons 69 Long Fleet and its doing the same thing. LEAKS ARE A PAIN IN THE ___!!!!! Gas out all around the cap and down the bed. So I shouldn't need a vented cap for mine??? I aslo want a locking gas cap so this thing doesn't turn into a tanker for the Neighborhood.
JRBECK64 |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Jul 2010
Location: Las Vegas, Nevada
Posts: 43
|
Re: Who makes a non-leaking gas cap??!!
There are no leaks with my non vented cap, but if it's warm there is a lot of pressure in there when you take the cap off.
|
![]() |
![]() |
![]() |
#11 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,006
|
Re: Who makes a non-leaking gas cap??!!
This is correct.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
![]() |
![]() |
![]() |
#12 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: Who makes a non-leaking gas cap??!!
that is dangerous as it can cause an explosion. also longer drives it can setup a vaccume and a fuel starvation issue. i've seen alot of parts changers piss alot of money at that problem when all that was needed was the correct vented gascap
__________________
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 |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Jul 2010
Location: Las Vegas, Nevada
Posts: 43
|
Re: Who makes a non-leaking gas cap??!!
Guess I've been lucky for the last 12 years or so. Time to go get a vented cap or plumb in a canister. Thanks for the info.
Last edited by danleaman; 09-14-2010 at 05:24 PM. |
![]() |
![]() |
![]() |
#14 |
Junior Member
![]() Join Date: Mar 2007
Location: DAYTON
Posts: 505
|
Re: Who makes a non-leaking gas cap??!!
I only fill my tank 3/4 full for everyday use. The only time I fill it up is when im on a trip & using it up fast....Keeps down on the spilling out & down the side of the bed
__________________
frontstreetcycle on Instagram |
![]() |
![]() |
![]() |
#15 |
Registered User
![]() Join Date: Jul 2007
Location: New River Arizona
Posts: 1,180
|
Re: Who makes a non-leaking gas cap??!!
I got one from O,Riles or Checker and I top off my tank to the neck and it does not leak. Check to make sure the neck is not bent.
|
![]() |
![]() |
![]() |
#16 |
Registered User
![]() Join Date: Oct 2009
Location: Cedar Falls Iowa
Posts: 19
|
Re: Who makes a non-leaking gas cap??!!
My 67 has a non vented tank, so it needs a vented cap. The air has to come from somewhere, or the engine stops. If your tank has an extra metal pipe inside the cab, above the fuel fill pipe, you have a vented tank, and don't need the vented cap. Just make sure the vent line is connected to the cannister. No cannister? Plug the metal line, change to a vented cap.
Sometime the seal around the gauge sender is leaking so bad, you can get away with a non vented cap with a non vented tank. This will also leak when you fill the tank. Another good reason not to smoke. Don't buy the $8 dollar stainless cap. Not because the cap is bad, but because the seal will crack in about 6 months. Also the $7 seals for the filler neck grommet where it passes throught the cab will crack if left in the sun after about 6 months, and you need to remove the tank to change that. Does anybody know where to buy good EDPM rubber seals? |
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Jun 2010
Location: Dallas, texas
Posts: 51
|
Re: Who makes a non-leaking gas cap??!!
go to autozone tell them you need gas cap # 6023
|
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|