Quote:
Originally Posted by Alpha D
Question so what happens to fuel pressure regulators that rise at the 1:1 rate. Do they rise and then drop back to the set pressure once you go into vacuum? Or is fuel bled of through the return line to maintain the set pressure?
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You normally set the regulator without the vacuum line attached. As an example, my car idles at 44psi or so but it'll drop to 40 under vacuum.
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