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<p class="MsoNormal">Question: is changing from the higher pressure Holley fuel pressure regulator (1-4 psi) to the lower pressure regulator really as simple as changing that cone-shaped spring under the cover?
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Somewhere along the line, it appears that I got the wrong Holley fuel pressure regulator – the higher pressure one. Adjusted all the way to the low end, I had 4.5-5.0 psi of fuel pressure. For years, that was just fine with my SUs, so
I just left it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But now I have switched to a different set of SUs and they’re bleeding fuel all over the place (out of the vent hole in the bowl covers and out of the jets). So I dug around and found that I had a spare Holley fuel pressure regulator.
And it had a different color spring (red vs. silver). So on a hunch I switched the springs. Voila! 2.5 psi.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is it really that simple??<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Scott B.<o:p></o:p></p>
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