I have a Holley electric fuel pump and for some reason my fuel pressure isn't staying consistent. It was almost at 10lbs yesterday and so I lowered it to about 5 1/2 at the regulator. Then this morning I started it, only to find it barely at 3lbs. Is there something I'm doing wrong or any suggestions? It's all leading to a 650 Demon. Thanks guys.

Make sure the fuel pressure gauge is accurate.I went through this once turned out the gauge I was using was liquid filled when it warmed up it didn't work right.

Thanks. Mine is liquid filled as well. Maybe that's the problem.

I have the same problem also with my JEGS liquid filled gauge. My pump puts out about 7psi and the gauges showed that until yesterday. Now, it shows 2-3psi. I will call JEGS to see if I can get a replacement. It is a new gauge.

Theo.