Sometimes it will not start and after running for awhile it just dies?

Short answer is yes. This is most likely a fuel pump issue or leaking injector.

However, either way we need to start with checking the fuel pressure.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Once we know the pressure then we can go from there. However, I suspect you are going to have a pump issue, so I am attaching the info on how to replace this.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

If the fuel pressure is okay, then we need to move onto spark but let's start with this and go from there.

Please see below for the process from the manual and let us know what you find. Thanks