Here's the deal. My Jeep fires up well but only after cranking it over atleast 2, maybe 3 times. Priming the system doesn't seem to help a whole lot. I've replaced the pressure reg/filter and a new BOSCH pump. New Crank sensor and cleaned out IAC. Cap and rotor are new, and new plugs and wires. This problem has gotten worse slowly over time. It started doing it randomly but usually when i'd let it set for 10-15min. Now it does it all the time everytime no matter what. The only time I get it start up right away without multiple tries is when I shut it off and then crank it back up right away. If i let it set for 3-5min it takes a couple seconds with the starter turning for the engine to crank up. It's like i'm loosing fuel pressure very quickly but I have a new pump and pressure regulator so I am ruling those out. I replaced my CPS so thats out too. I've decided on leaking injectors or possibly a cam sensor. Or any other suggestions you guys have would be great. FYI I know what a check valve is and what they do so no need to suggest that.

 

How old is your battery?

 

next time turn the key on open the hood and press the valve on the fuel rail See if it squirts out good

and how fast dos it crank over if its slow you my need a new starter
it may be drawing to much power

 

so basically I have no fuel pressure. I put a gauge on the rail and I had nothin. Even worse after turning the key back and fourth it doesn't even prime up. Eventually after turning the engine over the fuel pressure builds and eventually the engine fires once up to 50psi. Then once I shut the engine off it drops off immediately. I am going to pull the fuel line off the rail and see if the fuel pressure lost is in the rail or in the tank. I am pretty sure it is in the rail because there are signs of gas leaking out around the injectors.