Checking rail pressure while cranking

[Waterloo]

The reason I mentioned that fuel filter, it has happened to me at least twice when servicing the truck. These kids they employ just throw things together. Whenever I have had starting issues, the Davco is always the first place I go, and so far, that is where the problem has been. I carry an extra Davco with o rings in the truck just for that reason, along with my Davco Wrench. Start simple and then move up the chain...

And I know you do not have the Davco, but same principle involved with the gasket on your screw on unit, been there too, rare they mess up that filter, but it still happens, oil filters too, that is a real mess.