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installed my fuel pressure gauge tonight and the needle bounces back and forth between like 80 and 100 Psi, its never at a constant pressure. I have the pressure sending unit mounted to the upper driver side of the fuel bowl. Any ideas?:dunno:
 

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if that gauge is accurate, the pressure is set way too high. it should be set down to about 55 to 68 psi. that high of pressure will kill the pump!
 
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