Truck not starting

[Brock]

When you put your key to the on position, you'll hear the pump buzzing on the driver side of the engine. Let it prime 3 key cycles before turning it over. I've had issue with davcos making me suck air if they weren't tightened enough. If you don't have the tool and ate hand tightening it, that's the problem....

Try and wiggle the top clear portion of the davco, if it moves then it needs tightening.