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#1 |
Registered User
Join Date: Aug 2016
Location: Danville Wv
Posts: 267
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Gas Tank
Tightened the fuel line and sending unit up when it gets hot out and sun hits the cab it leaks on the fuel tank. When I take the gas cap off it lets off a lot of pressure how do I fix this problem. Would a new gas cap work?
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#2 |
Registered User
Join Date: Jun 2012
Location: Longmont, CO
Posts: 42
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Re: Gas Tank
Seems like maybe the vent on your cap is not working. A new vented cap is the easiest thing to try. Hope it works.
__________________
1967 Longbed 4/6 static 2007 Silverado Z71 Crew |
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#3 |
Registered User
Join Date: Aug 2016
Location: Danville Wv
Posts: 267
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Re: Gas Tank
Does anyone sell a vented gas cap looked on brothers and LMC didn't see any description saying if the gas cap was vented or not.
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#4 |
Registered User
Join Date: Jul 2017
Location: herminie, pa
Posts: 313
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Re: Gas Tank
I just bought this cap from napa
https://www.napaonline.com/en/p/BK_7031220 Its meant for trucks without evaporative emision controls. Its vented, but only through a relief valve. I think that will be the case for most gas caps. So the tank will still build up some pressure, but the cap will relief at a preset pressure.
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2009 GMC Sierra 1500 2006 Buick Lacrosse 1987 Chevrolet V10 1972 Chevrolet c20 350/350 1967 Chevrolet Biscayne ls3 swapped |
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#5 |
Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,178
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Re: Gas Tank
71-72 cap is vented, 70 and earlier is not, its vented from the passenger upper corner of the tank, up the b-pillar and down and out of the floor of the truck. Its quite intriguing.
__________________
"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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