Starting issue, catches then dies. 2003 Denali XL

[hacker-pschorr]

The video tells the story, did this for the first time yesterday after sitting in a parking lot for about an hour.

 

After waiting about 20 minutes, it started right up, stumbled then ran perfect all the way home.

 

This morning, it will not start again.

 

Fuel pump is working, I can hear it running.

 

 

 

 

 

[hacker-pschorr]

Rented a fuel pressure gauge from the auto parts store.

 

Connected the gauge, turned the key to the "on" position and pressure went up to 60 then slowly down to 50 and stayed there.

 

Turned the key to start, and it started right up without any fuss and idled perfect.

 

Fuel pressure 50psi at idle.