Quote Originally Posted by Ken1960
I can set gage at 6 lbs drive it to town it might be on 0 but still be running ok or it might be on 10 and the float bowls fluctuate,
Ken, when you say you can "...set the gage" that infers that you have some type of fuel pressure regulator, and based on what you're saying I'd take a WAG and say it's either not compatible with your pump output pressure & volume flow, or it's just bad. I think I'd be shopping for a good quality fuel pressure regulator that holds your pressure more like 4 psig steady, regardless of your throttle position. Also, if your gauge us not a liquid filled unit replace it too. You need liquid filled to damp out the harmonics and give you a steady needle. Again, this is my WAG, reading between the lines of your post.