I've searched and read a bit on the topic of the fuel rail not priming and I have a few questions. On friday my truck shut off. When trying to restart I noticed that I didn't hear the pump priming. I got the truck towed home and started researching. In Feb. 2017 I refreshed the grounds. Could the grounds need to be refreshed again? I was thinking about refreshing the dip stick ground due to oil build up. I've checked the volts on the fuel pump relay when the key was on and got 12v when grounded to batt and touched to 86. Ground to 30 got me 4.6v. Then I checked the orange (power?), gray (no clue), and black (ground) wires by the fuel tank I got 6.97v with the key on. I am trying to pin point the failure before spending a ton of money. Any help would be great.