So I decided it was time to install ball valves to make filter changing on my airdog easier. While I was doing this I changed the fuel filters out and pulled the regulator apart so I could inspect the ball and spring. Well now the pressure slowly builds and it takes a good 25 seconds before the pressure hits 18psi. Im at a total loss. This is verified by two mechanical gauges. Pickup starts perfect. Its an Airdog 2-165. The regulator is different than the spring and ball. It has a spring that pushes on a plunger type metal piece to regulate

Edited March 12, 201411 yr by mopartechnician

Well I figured it out. I have a grease gun hose between the vp and the snubber to help eliminate vibration and hammering. Well I eliminated the hose and snubber and the fuel pressure builds up normal. So Im guessing the hose is collapsing causing the problems. Now I gotta figure out something to hook the sensor up to so that it is away from the vibrations of the engine

I just used a tee in the fuel line between the stock filter and VP. Works pretty slick but it would be kind of a pain for you. Have to cut the line...

I might buy a tapped inline fitting since I have the big line. That way its not vibrating since the big line is rubber. I got some ideas, just gotta round up material