need a new filler neck gasket like this! help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

yellow400ex05 · 02-10-2013, 04:17 PM

where can i find the rubber gasket that goes behind the filler neck on the outside of the truck i found out today that parking on an incline with the drivers side downhill on a full tank it'll run out like crazy.

yellow400ex05 · 02-10-2013, 06:33 PM

nobody?

Mack B · 02-10-2013, 06:42 PM

Classicparts.com has them, but if I'm reading right, it's your cap that would be leaking?
Posted via Mobile Device

TopFuel1966 · 02-10-2013, 06:49 PM

Pg. 35

http://www.lmctruck.com/icatalog/cbe/full.aspx?Page=35

j.kirn · 02-10-2013, 07:21 PM

dont buy the aftermarket 1s they are not made of the same material as original ,they dont last in the sun or if gas gets on them

bonehead · 02-10-2013, 07:35 PM

Ditto, Sounds like you need a new cap worst than a seal.

71swb4x4 · 02-10-2013, 07:37 PM

I agree with the others. You need a new cap, that seal does nothing more than keep the weather out of your cab. It has nothing to do with keeping gas in the tank.

If I remember correctly Wes at Classic Parts had some made with a material superior than what others had been selling.

WhippinSaw · 02-10-2013, 07:38 PM

When I would fill mine up all the way it would also leak. It would happen no matter if the truck was level or not. I thought it might be thermal expansion of the gas as it would happen when it was warmer outside and gas would just push out and start dripping down the side ruining the paint in the sun. I always stopped filling at 3/4 tank. I will have to try a new cap to see if that works. Anyone else with similar experience/?

63burban · 02-10-2013, 07:53 PM

Is the gas leaking on the inside of the cab or on the outside ? Most times it's the short hose connecting the filler to the tank, they shrink and crack.

71swb4x4 · 02-12-2013, 09:42 PM

Quote:

Originally Posted by WhippinSaw

When I would fill mine up all the way it would also leak. It would happen no matter if the truck was level or not. I thought it might be thermal expansion of the gas as it would happen when it was warmer outside and gas would just push out and start dripping down the side ruining the paint in the sun. I always stopped filling at 3/4 tank. I will have to try a new cap to see if that works. Anyone else with similar experience/?

Something is wrong with the venting. I can't tell you exactly what way it is but it may be a vented/non-vented cap issue.

donthekawguy · 02-12-2013, 09:55 PM

It's you cap. But a new gasket would look better than the painted one you have on there IMO.

brokenspoke · 02-13-2013, 08:19 AM

FYI If memory serves me correct....Lynn Steele has the best quality groment

02-10-2013, 04:17 PM	#1
yellow400ex05 Registered User Join Date: Aug 2011 Location: confusion, USA Posts: 206	need a new filler neck gasket like this! help! where can i find the rubber gasket that goes behind the filler neck on the outside of the truck i found out today that parking on an incline with the drivers side downhill on a full tank it'll run out like crazy.

02-10-2013, 06:33 PM	#2
yellow400ex05 Registered User Join Date: Aug 2011 Location: confusion, USA Posts: 206	Re: need a new filler neck gasket like this! help! nobody?

02-10-2013, 06:42 PM	#3
Mack B Registered User Join Date: Apr 2012 Location: L.ower A.labama Posts: 518	Re: need a new filler neck gasket like this! help! Classicparts.com has them, but if I'm reading right, it's your cap that would be leaking? Posted via Mobile Device

02-10-2013, 06:49 PM	#4
TopFuel1966 Registered User Join Date: Jul 2009 Location: Menifee, CA Posts: 471	Re: need a new filler neck gasket like this! help! Pg. 35 http://www.lmctruck.com/icatalog/cbe/full.aspx?Page=35

02-10-2013, 07:21 PM	#5
j.kirn Registered User Join Date: Jun 2006 Location: MO. Posts: 970	Re: need a new filler neck gasket like this! help! dont buy the aftermarket 1s they are not made of the same material as original ,they dont last in the sun or if gas gets on them

02-10-2013, 07:35 PM	#6
bonehead Registered User Join Date: Jun 2007 Location: Charlotte, NC Posts: 516	Re: need a new filler neck gasket like this! help! Ditto, Sounds like you need a new cap worst than a seal. __________________ past trucks: 1980 C-10 Silverado SWB 1961 C-10 custom cab LWB 1966 C-10 custom cab LWB

02-10-2013, 07:37 PM	#7
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: need a new filler neck gasket like this! help! I agree with the others. You need a new cap, that seal does nothing more than keep the weather out of your cab. It has nothing to do with keeping gas in the tank. If I remember correctly Wes at Classic Parts had some made with a material superior than what others had been selling. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

02-10-2013, 07:38 PM	#8
WhippinSaw Registered User Join Date: Aug 2012 Location: Lisle Illinois Posts: 602	Re: need a new filler neck gasket like this! help! When I would fill mine up all the way it would also leak. It would happen no matter if the truck was level or not. I thought it might be thermal expansion of the gas as it would happen when it was warmer outside and gas would just push out and start dripping down the side ruining the paint in the sun. I always stopped filling at 3/4 tank. I will have to try a new cap to see if that works. Anyone else with similar experience/?

02-10-2013, 07:53 PM	#9
63burban Chevy addict Join Date: May 2012 Location: Iron Ridge, WI Posts: 1,085	Re: need a new filler neck gasket like this! help! Is the gas leaking on the inside of the cab or on the outside ? Most times it's the short hose connecting the filler to the tank, they shrink and crack.

02-12-2013, 09:55 PM	#11
donthekawguy Registered User Join Date: Aug 2012 Location: Rathdrum ID Posts: 1,129	Re: need a new filler neck gasket like this! help! It's you cap. But a new gasket would look better than the painted one you have on there IMO. __________________ 66 shorty

02-13-2013, 08:19 AM	#12
brokenspoke Registered User Join Date: Jul 2011 Location: Anderson, Texas Posts: 535	Re: need a new filler neck gasket like this! help! FYI If memory serves me correct....Lynn Steele has the best quality groment



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