Hard starting

Hi,

It sounds like a lot has already been done. Have you checked for diagnostic trouble codes? There are several things that can cause this type of symptom.

Are there any odd smells or smoke from the exhaust? I realize the fuel pump is new, but have you confirmed fuel pressure?

Here is what I suggest. If you haven't already, scan the computer to see if there are diagnostic trouble codes that may help us. Here is a quick video showing how it's done.

https://youtu.be/InIlnsjOVFA

Next, let me know how long it stays running before it stalls.

If you are able to retrieve codes, let me know what they are so I can better help you.

Take care,

Joe