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#1 |
Registered User
![]() Join Date: Nov 2002
Location: Mt. Vernon, WA..
Posts: 2,322
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vented gas tank
where do theses go? is this a CA tank or was that normal in 71?
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Up the pillar and looped together.
normal on all 71/72 trucks. |
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#3 |
WHYBYNU when old will do?
Join Date: Jul 2003
Location: Loudon, NH
Posts: 876
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Not to hijack, but if that was removed and replaced with a short loop of hose, could it cause a gas smell or gas fumes to leak into the cab? Just trying to get rid of the fumes in my cab.
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-72 Chevy C10 Stepside -2002 Chevy Silverado 2500HD 4x4 -1984 Jeep CJ7 -1995 Polaris XCR600 Custom -2003 Honda 300ex |
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#4 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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There were variations in the 71-2's. The AC cabs, (not sure if all were this way), had a sending unit with two lines on it and no
vent line on the side as the picture shows. On the side vents, like the picture shows the line looped up into the cab, down through the floor and was routed to the carbon canister in the front. Jim |
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#5 |
Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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72c10step do you smell it more after putting in gas? Your gas neck hose is probably leaking-had same problem on my 65 GMC-fixed it with new hose on fiiler neck.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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#6 |
Project Junkie! Fishing Poor!!
![]() Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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The 67-72 tanks do not have filler neck hoses. The 71-72s with eec had a filler neck vent hose, but that is it. If he is smelling gas the problem is likely to be the "O" ring that seals the sending unit to the tank. Other problems are gas leaking out of the tank when you make a right turn, then following the filler neck into the cab, or the tank vent lines pictured leaking fumes. If the gas is following the filler neck after leaking on right turns, then he could try replacing the gas cap and the filler neck grommet. WES www.ClassicHeartbeat.com
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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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#7 |
WHYBYNU when old will do?
Join Date: Jul 2003
Location: Loudon, NH
Posts: 876
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Should I go with a sealed cap, or vented? I know its a 72, so they normally had sealed (I think), but with all the emissions stuff removed, shouldn't it be vented instead?
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-72 Chevy C10 Stepside -2002 Chevy Silverado 2500HD 4x4 -1984 Jeep CJ7 -1995 Polaris XCR600 Custom -2003 Honda 300ex |
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#8 |
Project Junkie! Fishing Poor!!
![]() Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
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I would go to a vented cap. I use vented caps on all my tanks. WES www.ClassicHeartbeat.com
__________________
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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#9 |
WHYBYNU when old will do?
Join Date: Jul 2003
Location: Loudon, NH
Posts: 876
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What years are the vented cap from, 67-70?
__________________
-72 Chevy C10 Stepside -2002 Chevy Silverado 2500HD 4x4 -1984 Jeep CJ7 -1995 Polaris XCR600 Custom -2003 Honda 300ex |
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#10 |
Registered User
Join Date: Jan 2004
Location: LV,NV
Posts: 169
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i have a vented cap and a vaccuum develops as i drive..is this sucking normal?
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