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Bluebell · 07-16-2013, 08:35 PM

[QUOTE=steve s; Bluebell's pressure increase theory sounds good if you read it fast, but it only makes sense if the system is sealed up to maintain a constant volume]

So Bruce, here we stand, back to back, against the mob, pondering the issues of life.

Steve S and others.
I have never put a spanner to a model A in my life, but I can tell you that there is something wrong with your car if a bubble of gas in your fuel line cannot make its way immediately, up into the tank.
The laws of nature / science dictate so. Try putting some fuel in a clear tube, leaving a bubble. Block both ends with your thumbs, and now tip it to vertical.
Does the bubble rise to the top?
Can you keep the bubble down?
Would you call the reason for the bubble being there "vapor lock"?
Would you trust a spirit level?
Maybe you should read my post slowly.

I have not tried to detail all facets of the operating process of a petrol pump, rather I have sought to clarify the reasoning behind the term "vapor lock" for those who do not know.
All the other airy fairy fuel blockage, blocked cap vent issues are all just patterns in the clouds.
I am here on this forum, firstly (and selfishly) to learn, and secondly (the payback) to help people with some of the stuff I have learnt from 43 years of mechanicing for a living.

07-16-2013, 08:35 PM	#40
Bluebell Senior Member Join Date: Nov 2012 Location: Tauranga, New Zealand Posts: 726	Re: Vapor lock [QUOTE=steve s; Bluebell's pressure increase theory sounds good if you read it fast, but it only makes sense if the system is sealed up to maintain a constant volume] So Bruce, here we stand, back to back, against the mob, pondering the issues of life. Steve S and others. I have never put a spanner to a model A in my life, but I can tell you that there is something wrong with your car if a bubble of gas in your fuel line cannot make its way immediately, up into the tank. The laws of nature / science dictate so. Try putting some fuel in a clear tube, leaving a bubble. Block both ends with your thumbs, and now tip it to vertical. Does the bubble rise to the top? Can you keep the bubble down? Would you call the reason for the bubble being there "vapor lock"? Would you trust a spirit level? Maybe you should read my post slowly. I have not tried to detail all facets of the operating process of a petrol pump, rather I have sought to clarify the reasoning behind the term "vapor lock" for those who do not know. All the other airy fairy fuel blockage, blocked cap vent issues are all just patterns in the clouds. I am here on this forum, firstly (and selfishly) to learn, and secondly (the payback) to help people with some of the stuff I have learnt from 43 years of mechanicing for a living.