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08-17-2007, 12:49 AM
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#1 |
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Registered User
Join Date: May 2007
Location: Abilene TX
Posts: 18
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72 Gas Smell
I am a new member and hope I get this in correctly. I am finishing up on a 72 Cheyenne LB. I have completely redone the interior and have a strong gas odor when I drive. There are no leaks inside the cab. I have not replaced the cardboard cover yet, would that make that much difference? Hope to be here with pics next time.
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08-17-2007, 12:51 AM
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#2 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: 72 Gas Smell
i think all our trucks have that smell whether strong or weak. its just having the gas tank behind the seat.
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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08-17-2007, 01:09 AM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: 72 Gas Smell
if the gas tank is sealed good, there will be no smell.
There are 3 common places on a 71/72 to cause this; the O-ring on the sender the neck going into the tank (caused by leaning on the filler as you gas up) the rubber line that goes into the cab piller in back |
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08-17-2007, 09:03 AM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: 72 Gas Smell
a worn gas cap can cause smell too
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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 |
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08-17-2007, 09:05 AM
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#5 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: 72 Gas Smell
Another problem is when the tank is full it will speal out the cap while you drive and with the window down you will smell it at stop lights. My 71 was bad about doing this.
I don't mean it's just running out of the truck but splashing around in the tank and hitting the backside of the cap it will smell.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71  Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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08-17-2007, 11:37 AM
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#6 |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: 72 Gas Smell
I agree there should be no smell. If all is correct.
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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08-17-2007, 12:36 PM
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#7 |
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Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: 72 Gas Smell
I think the line running up the B pillar Andy mentioned is a vent line. I don't have a 71-72, so I don't know if it is an open line or if it have a breather on it, but if it is open, you can try to put a breather on it. They let air in but not out. I got these off eBay for my blazer tank conversion, and they would probably work in this situation to:
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE Last edited by glock35ipsc; 08-17-2007 at 12:37 PM. |
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08-20-2007, 10:30 AM
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#8 |
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Registered User
Join Date: May 2007
Location: Abilene TX
Posts: 18
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Re: 72 Gas Smell
Thanks guys I will check out the things you mentioned.
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08-20-2007, 03:41 PM
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#9 |
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To The Levy
Join Date: Jan 2007
Location: california
Posts: 391
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Re: 72 Gas Smell
I believe you guys are correct, I like the breathers glock showed, nice and pretty colors , too bad they'll be behind the seat and not seen. oh well, I think there were two types of tanks vented and non vented, I remember this due to buying a replacement gas cap, the cap makes a big difference in which tank you have. and yes , like others mentioned, sender oring, rubber lines, and for gods sake no leaks at carb..... good luck and hopefully you dont get too sick of the fumes if you end up living with it.
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08-20-2007, 03:54 PM
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#10 | |
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67 is sold
Join Date: Apr 2001
Location: Troy, Michigan
Posts: 6,738
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Re: 72 Gas Smell
Quote:
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08-20-2007, 03:54 PM
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#11 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: 72 Gas Smell
the vent isn't supposed to vent into the atmosphere or into the cab.. .those vent things will make things WAY worse. IIRC, they vent goes up to the charchol canister under the hood. This started in 71.
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08-20-2007, 04:34 PM
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#12 |
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Registered User
Join Date: Aug 2006
Location: HARRISON AR.
Posts: 309
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Re: 72 Gas Smell
Dont Forget The Short Hose Just Inside And On Top Of The Filler Neck.its Bad To Dry Rot And When It Does Its Like An Open Hole Right Behind Your Left Shoulder.
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72 2wd lwb cheyenne super youngest son.green/white 72 2wd lwb cheyenne super oldest son.green/white 71 4wd 3/4 cheyenne super frame off manderin copper / white 4 inch lift. FINALLY DONE / SOLD 72 4WD SWB CHEYENNE BLUE/WHITE 388 AUTO REMEMBER THE COPS NEVER THINK ITS AS FUNNY AS YOU DO. NORWOOD SURVIVOR COPPERTONE BUILD THREAD/ http://www.67-72chevytrucks.com/vboa...d.php?t=259856 |
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