Drunkcanuk
I'm Awesome
I remember how much of a pain those new straps are!!!! Thanks for the PTSD!!!! Lol
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Just checked the dead head pressure and it measures 16psi with air in the line and 19psi when I purge the air out.
19 psi is 19 psi whether it's fuel, air, jello, poop. So it compressed, just means it took a second longer, and reduced volume till it became equal to applied force( pump output ).
I posted the old "which weighs more, a pound of iron or a pound of gold" some time ago, maybe on this forum although I didn't find it in a quick search.what weighs more a pound of feathers or a pound of rocks, scenario.
Not sure if this would be considered a correct answer but the relationship of fluid vs air is not so much weight as it is density. Air is going to pass by the valve in the FPR easier than fuel and not have to lift it as far off its seat and not compress the spring as much as fuel that does have to push the valve farther off its seat thus compressing the spring more resulting in a higher reading. I know that in the past my testing with air has always given a lower reading than testing the same device with liquid.There were some interesting but incorrect answers, and eventually correct answers with explanation.