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I need some ideas as to what is causing this problem. I have a fuel lab afpr, with a gauge so I can monitor what my fuel pressure is. I set it at 43.5 on the gauge, go drive it and when I come back home for whatever reason it drops down to around 37-38 psi. The nut and screw are tight on top. What keeps causing my gauge to read 37-38 when it should be reading 43.5?
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