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Slow building fuel pressure

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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 by mopartechnician

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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...

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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

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.