Hey guys, I'm having a slow start issue with my 2008 Explorer Sport trac. Recently it's received a brand new fuel pump, a new fuel pump driver, new spark plugs and ignition coils! And it still hasn't fixed the problem, what's happening is when I start the truck after its hot, there's somewhat of a delay. As if it's starving for fuel, however, in the mornings on its first start or after a shift at work it starts just fine on the first start which prompted me to now think I'm having vapor lock! Gas cap is brand new too. I had the fuel injectors tested and they all seem fine, I'm at a complete loss. It's killing me and as one can imagine I have spent a lot in parts and at this point in my life I have had to pay for labor instead of my usual DIY because I recently had major back surgery due to being hit by a big rig in December of last and pushed into the rear of an F350 while I was at a complete stop and the rig was doing about 40 mph. Been suffering ever since with constant doc visits, surgeries and so one to correct the issues. I'm tired of shelling out money with no solution, I had a solution I thought but apparently I was wrong. I'm going to change all relays that I think may affect the area but any insight into this issue would be greatly appreciated! Thank you!

 

Oh and the fuel filter is brand new as well. I am truly at a loss. I have spent a few thousand already, I really need a solution or direction to follow. My best friend is a master mechanic, even he's lost. Any sort of help is appreciated. So again this is what has been done:

-fuel pump
-fuel pump driver module
-fuel filter
-spark plugs
-ignition coils
-serviced fuel injectors
-serviced throttle body
-new gas cap

What's coming:
-new intake manifolds
-new catalytic converters
-full exhaust work

 

Check fuel pump pressure while running and stopped, should be around 50 lbs. If it leaks down quick, check fuel pressure regulator

 

Thanks man, I had actually just started to look into that direction. Doing it as I go since mobility
Is an issue right now