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#1 |
Freedom isn't Free
Join Date: Oct 2006
Location: OKC
Posts: 393
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Gas Spillage in Corners
Obviously the first thing I did it buy a new gas cap - twice. Tried three different caps, all did the same thing
when I take a curve or a right turn, gas spills out the filler neck. WTF?
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Previous rides: (worth mentioning) 67 camaro 70 long fleet, 69 short step (stolen), 72 blazer 62 chrysler imperial (hell yeah) 55 and 56 chevy hdtps 72 monte carlo Daily Driver: 86 S-10 Blazer (drive it til I die) and 71 long fleet Projects: 71 suburban, 72 C-30 Dually, 71 Chevy LWB ![]() |
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#2 |
Registered User
Join Date: Feb 2010
Location: Pennsylvania
Posts: 85
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Re: Gas Spillage in Corners
So we are talking about a '72 Blazer here?
Last edited by Monte Carlo Man; 01-26-2011 at 07:45 PM. |
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#3 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Gas Spillage in Corners
Have you inspected the filler neck? A lot of times they are cracked from 40+ years of gas filler nozzles being leaned on while filling the tank.
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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 |
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#4 |
Registered User
Join Date: Oct 2010
Location: everett washington
Posts: 382
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Re: Gas Spillage in Corners
check the vent tube had the same problem on my 66 econoline and that was the problem
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a wise man once said "There are only two real rules to life... 1 - Don't sweat the small stuff 2 - Everything is small stuff |
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#5 |
Freedom isn't Free
Join Date: Oct 2006
Location: OKC
Posts: 393
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Re: Gas Spillage in Corners
Sorry, nope, my 71 LWB Fleetside.
__________________
Previous rides: (worth mentioning) 67 camaro 70 long fleet, 69 short step (stolen), 72 blazer 62 chrysler imperial (hell yeah) 55 and 56 chevy hdtps 72 monte carlo Daily Driver: 86 S-10 Blazer (drive it til I die) and 71 long fleet Projects: 71 suburban, 72 C-30 Dually, 71 Chevy LWB ![]() |
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#6 |
Registered User
Join Date: Jul 2010
Location: Vista Ca.
Posts: 2,405
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Re: Gas Spillage in Corners
I had the same problem but didn't want to give up my old gas cap. So I bought a six dollar cap at Kragens and swapped the gasket.
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#7 | |
Junior Member
![]() Join Date: Mar 2007
Location: DAYTON
Posts: 505
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Re: Gas Spillage in Corners
Quote:
I dont fill my tank up all the way to try & avoid the spilage...
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#8 |
Registered User
Join Date: Jan 2011
Location: Phoenix, AZ
Posts: 89
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Re: Gas Spillage in Corners
I am having the same problem on my 1970. My problem stems from the fact that some "Jackleg" mangled the top of the neck before she was mine. There is only 1 "ear" left for the cap to grab. Has anyone ever replaced just the fill neck? If so how would I go about it?
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#9 | |
Project Junkie! Fishing Poor!!
![]() Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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Re: Gas Spillage in Corners
The problem is a worn filler neck. You can double up the gasket, or you can use a stant locking gas cap witch seals better. Sometimes you can just back the cap off untill the dogs come out of the notches. That will hold the cap down harder, or you can replace the tank.
Quote:
WES
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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 |
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#10 |
69' Chevy Stepside
![]() Join Date: Mar 2008
Location: Anchorage, Ak
Posts: 526
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Re: Gas Spillage in Corners
Our 70' has the same problem with gas leaking out of the gas cap if its filled all the way, think I'll try the double gasket trick to see if that fixes it.
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-Matthew -69' Chevy Custom/10 Shortbed Stepside 2WD "Copperhead" - Restored, 6.0L LQ9 Built. L92 Heads and LS3 Intake with Comp Cam 223/231 .610/.617 112 LSA, 4L60E with Shift Kit and Circle-D 3200 Stall Converter ~Build Thread -1957 Chevy BelAir 2 Door Post Sedan, Full Frame off Restoration done myself - 6.0L with T56 six speed -1957 Chevy BelAir 2 Door Post Sedan - Nearly rust free AK car, Project in the waiting -2003' Chevy Silverado SS AWD 6.0L! - Daily Driver |
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#11 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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Yep sounds like a worn neck, either new tank or double the gasket on the cap
__________________
'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#12 |
Freedom isn't Free
Join Date: Oct 2006
Location: OKC
Posts: 393
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Re: Gas Spillage in Corners
never thought to double up the gasket. You guys kick ass - I have 3 or 4 caps laying around. cheap fix if it works.
thanks fellas.
__________________
Previous rides: (worth mentioning) 67 camaro 70 long fleet, 69 short step (stolen), 72 blazer 62 chrysler imperial (hell yeah) 55 and 56 chevy hdtps 72 monte carlo Daily Driver: 86 S-10 Blazer (drive it til I die) and 71 long fleet Projects: 71 suburban, 72 C-30 Dually, 71 Chevy LWB ![]() |
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#13 |
Registered User
Join Date: Oct 2009
Location: canton ga
Posts: 12,728
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Re: Gas Spillage in Corners
I have a new tank and a new cap and it still spills out the neck.I may also try the double gasket idea.
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#14 |
Grandpa in the rustmobile...
Join Date: Nov 2008
Location: Spokane WA/Viola TN
Posts: 11,422
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Re: Gas Spillage in Corners
Mine did it also, locking gas cap at a yard sale for $1. I love an old truck.
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John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4 |
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#15 | |
Freedom isn't Free
Join Date: Oct 2006
Location: OKC
Posts: 393
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Re: Gas Spillage in Corners
Quote:
I am trying the double seal tomorrow.
__________________
Previous rides: (worth mentioning) 67 camaro 70 long fleet, 69 short step (stolen), 72 blazer 62 chrysler imperial (hell yeah) 55 and 56 chevy hdtps 72 monte carlo Daily Driver: 86 S-10 Blazer (drive it til I die) and 71 long fleet Projects: 71 suburban, 72 C-30 Dually, 71 Chevy LWB ![]() |
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#16 |
Registered User
![]() Join Date: Dec 2010
Location: ravensdale washington
Posts: 111
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Re: Gas Spillage in Corners
Trucks don't have vent tubes on the filler neck.
WES[/QUOTE] my truck has a vent tube on the filler neck of the stock tank, its he EEC evap emission style tank
__________________
![]() ![]() ![]() 71 gme Sierra Grande lwb. 68 Rambler American 2 door 75 jeep cj5 |
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#17 |
Registered User
![]() Join Date: Dec 2010
Location: ravensdale washington
Posts: 111
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Re: Gas Spillage in Corners
last week i bought some 3/16" thick gasket material from the auto part store. cut out a gasket and put it over the old one and it works awesome. No more leak. The cap is tight as hell though, but its better than a gas stain on the bed and cab corner. The gasket material was $3.49 and was about 12" x 16" square
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![]() ![]() ![]() 71 gme Sierra Grande lwb. 68 Rambler American 2 door 75 jeep cj5 |
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#18 |
Registered User
![]() Join Date: Jan 2011
Location: truckee ca
Posts: 7
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Re: Gas Spillage in Corners
looking for 72 blazer rear hatch strikers.
Any leads? |
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#19 |
Registered User
Join Date: Sep 2010
Location: Fort Worth, TX
Posts: 222
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Re: Gas Spillage in Corners
My 72 leaks like a sieve after a fill up too. When I take a right turn I can look in the mirror and just see dollars gurgling out of the filler neck. It's a locking gas cap, which I don't like, so I think I'll try a new one and add an extra layer of gasket in there as well. Or I could just install that Blazer tank that I ordered and have been staring at for the last few months...hmmmmm...
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Derek 72 Chevy Cheyenne Super LWB 454 SS LS6 90 GMC Suburban V2500 350 ----------- 64 Chevy El Camino 357 73 Jeep Wagoneer 360 78 Jeep Cherokee 360 79 Scout II 345 88 Jeep Wrangler 4.2L 91 Jeep Wrangler 4.3L 98 Lincoln Mark VIII 4.6L 01 GMC Yukon 5.3L "If it's not broken, fix it 'till it is!" |
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#20 |
Freedom isn't Free
Join Date: Oct 2006
Location: OKC
Posts: 393
|
Re: Gas Spillage in Corners
added a second gasket, filled the tank, and..................................PRESTO! No more leaks. Now I can paint the truck.
THANKS FELLAS!
__________________
Previous rides: (worth mentioning) 67 camaro 70 long fleet, 69 short step (stolen), 72 blazer 62 chrysler imperial (hell yeah) 55 and 56 chevy hdtps 72 monte carlo Daily Driver: 86 S-10 Blazer (drive it til I die) and 71 long fleet Projects: 71 suburban, 72 C-30 Dually, 71 Chevy LWB ![]() |
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#21 |
Registered User
Join Date: Oct 2010
Location: Palaskifield,Mo.
Posts: 71
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Re: Gas Spillage in Corners
I have a 71. Do these trucks not have a vent at all? Wouldn't pressure build up inside tank? It does have a tube on yhe passenger side in the corner of cab, is this the vent? If so where does it exit the cab? Since we were on the subject, I thought I would ask.
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#22 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: Gas Spillage in Corners
The gas tank on my '71 is vented through the charcoal canister that is just outside the battery in the fender. The vent goes from the tank then to the right corner of the cab and then down through the floor and then to the charcoal canister.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. Last edited by Shyguy; 01-29-2011 at 12:03 AM. Reason: add information |
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#23 |
Registered User
![]() Join Date: Dec 2010
Location: ravensdale washington
Posts: 111
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Re: Gas Spillage in Corners
my factory gas cap is vented their is a small hole from the inside you can suck air through it easily but cant blow throigh it very well at all. i do have the vent tube on the pass side but dont know where it gos either. i dont have a charcoal can on mine but gramps may have yanked it out.
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![]() ![]() ![]() 71 gme Sierra Grande lwb. 68 Rambler American 2 door 75 jeep cj5 |
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