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Author Topic: 67 gas cap  (Read 348 times)
chili r
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« on: August 04, 2014, 09:10:24 PM »

  I have been driving my 67 Camaro about every other day 50-60 miles and I noticed a fuel smell inside. I have all new hoses and clamps and gas tank seal and such fine. After a longer drive I stopped at a parts store and as I walked away from car I heard a "tea pot whistle " pitched sound. It was coming from fuel cap and I released cap and it had a great deal of pressure. The vapor smell was exactly what I have been smelling. I can drive the car 5 miles and cap has pressure, what is wrong? Huh
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maroman
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« Reply #1 on: August 05, 2014, 07:02:03 AM »

The vent is clogged.
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Doug  '67 RS/SS 396 auto I know the car since new
x77-69z28
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« Reply #2 on: August 05, 2014, 10:43:12 AM »

From the piss they call gas these days.
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
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hotrod68
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« Reply #3 on: August 05, 2014, 11:52:14 PM »

Amen on the piss they call gas. It's pathetic.
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HotRod'68  1968 SS350 coupe undergoing frame-off resto/rod. 386/350/4.11s
Butternut Yellow    black standard interior
JohnZ
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« Reply #4 on: August 07, 2014, 09:42:48 AM »

The cap contains a 2-way vacuum/pressure valve which allows air entry to replace the volume of fuel used so the tank doesn't build a vacuum (which can result in fuel starvation or partial collapse of the tank), and allows pressure relief at a certain pressure level to avoid distortion of the tank. Both sides of that valve need to be working.
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'69 Z/28
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