2002 GMC 5.7 ltr. Savana (Van) hard starting?

nahj9

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My vehicle had been a great starter until approx 2 mo. ago. It would start immediately in the past. It has been a good dependable Van with 150,000 miles and absolutly no problems of any kind until now!
By-the-way, when it does start and run it runs normally even at idle and will start fairly normally on a restart withn approx. an hour after shutdown.
I have tested the fuel pressure and it seems normal with a reading initially of approx. 60 psi. It bleeds down to approx 25 - 30 psi. in approx. 5 min. with fuel pump (Ingntion Sw.) Off.
I've changed the Fuel Filter, Fuel Pressure Regulator, and Ingntion Coil with, seemingly. no improvements to starting problem.
The area under the Upper Intaake Manifold seemed notmal although I did expect it to be drier than it was. I believe that it maybe abit damp with fuel. All the injectors are original factory.
I need to correct the starting problem so what have I missed??
Any suggestions would be very helpful!!
Thanks much,
 


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