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-   -   Pressure in gas tank 1969 Nova SS 350 (https://www.yenko.net/forum/showthread.php?t=149925)

RAII4speed 07-20-2018 03:20 PM

Pressure in gas tank 1969 Nova SS 350
 
3 Attachment(s)
My 1969 Nova SS 350 4-speed Has pressure in the tank every time I run it and it has a vented cap. Is that normal?

L78steve 07-20-2018 04:59 PM

Normal. Cap lets air in not out.

RAII4speed 07-20-2018 05:24 PM

It actually broke the seam in the top of the original tank and I do not want to harm the new one. What to do?

L78steve 07-20-2018 08:36 PM

Iv,e never heard of the pressure build up causing a problem. Besides the needle and seat in the carb. would pop off if the pressure was excessive.
Gut an old cap and install a pressure gauge. Bet its less than a pound.
It may seem like more due to the volume.

L78steve 07-20-2018 08:38 PM

Most times I fill up my 70 Nova I get a pressure release.

m22mike 07-21-2018 12:05 AM

http://www.camaros.org/forum/index.p...9277#msg139277
I
http://camaros.org/forum/index.php?P...55&topic=239.0

novadude 07-23-2018 05:05 PM

My old 70 Nova used to hiss at you all the time when unscrewing the cap. I never did figure out why, but I guess it's normal?


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