Fuel issue
Have a 2000 gmc k2500 with the 5.7. Just changed
the fuel pump and fuel filter. It ran great for roughly
2 hours then began to spit and sputter and backfire
through the intake. Barely limped it home wouldn’t
go over 2000 rpm. Now it will not start at all and no
pressure at the shrader valve but plenty of pressure
right off of the fuel pump itself. What would cause
this