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Post by Deleted on Jun 20, 2010 7:41:16 GMT -5
what is normal when taking of the fuel cap as far as pressure goes?
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Post by Jer on Jun 20, 2010 18:21:44 GMT -5
I generally have to apply approximately 10 to 12 ft. pounds of torque pressure (counter clockwise) to get the cap off.
But then I've always had fairly strong hands, so I could be a little off.
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Post by Deleted on Jun 23, 2010 17:51:43 GMT -5
I generally have to apply approximately 10 to 12 ft. pounds of torque pressure (counter clockwise) to get the cap off. But then I've always had fairly strong hands, so I could be a little off. I guess my wording was way off. When I take off the gas cap there is air pressure that comes out. Something like wooooooosh. How much wooooooooooooooooooosh should there be. I'm glad I got it in technical terms now.
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Post by 71greengo on Jun 23, 2010 19:10:11 GMT -5
I generally have to apply approximately 10 to 12 ft. pounds of torque pressure (counter clockwise) to get the cap off. But then I've always had fairly strong hands, so I could be a little off. I guess my wording was way off. When I take off the gas cap there is air pressure that comes out. Something like wooooooosh. How much wooooooooooooooooooosh should there be. I'm glad I got it in technical terms now. I thought( as I dont have a running car yet) that our cars had Vented gas caps...??..........And if you are getting a whoosh then its the wrong cap on there??......I have seen my buddies 68 firebird suck the tank in by not having the right cap...... Maybe I am wrong?......
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Post by Deleted on Jun 23, 2010 19:11:20 GMT -5
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Post by greenbeast on Jun 24, 2010 12:04:05 GMT -5
i think I had the same problem but worse, my return lines, on top of the tank were plugged up and it was creating allot of presure in the tank, I used to have to stop and take the cap off and let some air in but I have now fixed the return lines and it is working great, don't know but might be starting to plug up on yours?
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Post by Deleted on Jun 24, 2010 16:34:15 GMT -5
I guess my wording was way off. When I take off the gas cap there is air pressure that comes out. Something like wooooooosh. How much wooooooooooooooooooosh should there be. I'm glad I got it in technical terms now. I thought( as I don't have a running car yet) that our cars had Vented gas caps...??..........And if you are getting a whoosh then its the wrong cap on there??......I have seen my buddies 68 firebird suck the tank in by not having the right cap...... Maybe I am wrong?...... Vented cap? I thought all that junk they added up to the canistor and over to the carb was suppose to equall everything out? It just did this the last trip out and never before. Hmm, maybe I should check the lines. I guess I'll have to drop the tank for that. It is the original fuel cap.
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Post by Deleted on Jun 24, 2010 16:38:16 GMT -5
Bob, if it makes you feel any better...I understood the gist of your initial post. I never hear any woosh... On the rare occasions that I try to start up one of my cars...I usually find out that all the gas that was in the tank has since evaporated. Probably should get a gas cap? I knew you would get it Tom. Being one of those top notch high end Pep Boy Teknisions.
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Post by Nacho-RT74 on Jul 5, 2010 11:05:07 GMT -5
I'm on same deal and I supposelly have a vented gas cap, Stant. what is if really the vented cap, is to let get in air as far gas is being suctioned, and not release gas vapor when tank gets hot or shaking creating vapors.
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Post by 71greengo on Jul 5, 2010 11:12:29 GMT -5
I'm on same deal and I supposelly have a vented gas cap, Stant. what is if really the vented cap, is to let get in air as far gas is being suctioned, and not release gas vapor when tank gets hot or shaking creating vapors. Vented caps are to let air in...ALL my old chevies that had carbs had vented caps....
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