The fuel pump can be working, but not putting out quite enough pressure. Go to AutoZone, Advance Auto, or O'reilly's and borrow a fuel pressure tester gauge. This will let you know exactly how much pressure you are getting. In particular, test it when it will not start. With the engine off, and key on, you should get between 40.5 and 47 psi. At idle speed, it will be a little lower than that, but ALLData does not give an exact number.
The attached image is a how-to on relieving fuel pressure.
And this is our how-to guide on testing fuel pressure: https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Do that and get back to us.
Thursday, November 9th, 2017 AT 3:07 AM