2002 hard start cold/sitting

[Raginyamaha]

Leave the jeep sitting overnight and it takes a long time (6-8 seconds of cranking) for the engine to fire. I've put 2 fuel pumps in it and the fuel pressure drop in 10 min is less than 5 psi. If I turn the key to on a few times to prime the system it starts just fine. This is really starting to bug me.

 

[Rowlette]

I would search for a small leak or loose clamp at joining points.

 

[LibertyTC]

How much psi on gauge are you viewing with the key on?

 

[Raginyamaha]

How much psi on gauge are you viewing with the key on?

Prime goes to 50 psi. I took the fuel rail out to see if the injectors leak at all and they don't. How long does the ECM prime the system for? Seems very quick, don't have another to compare it to tho.. If it sits overnight the psi is at about 10 psi.