Pressure bled off slowly with the valve in place of the fuel filter, and stopped around 48 pounds. Did the same thing whether valve was open or closed. Because it bled off so slowly I'm not too concerned.
Truck will start with starting fluid, so I'm pretty sure it's not a spark issue. At this point it can only be fuel delivery.
I checked the wiring diagrams again and saw that there is a fuse going to the injectors. Checked this fuse, and it appeared to be black with grime. Cleaned it and tested voltage, good voltage. Checked voltage at injectors, good voltage.
Ran a fused jumper wire at fuel relay terminal to run fuel pump indefinitely and tried starting the car, no change. This tells me it's not a wiring or relay issue.
Removed the bolts from the bed and lifted it enough with a jack to get in there. Removed the wiring to the pump and tested voltage. Good voltage.
Removed clamp from fuel pump and lifted it out of the tank some. It looks like the hose going from the pump to the sender is pretty dark, so the assembly might have gotten gummed up and restricted.
When I first rebuilt the engine I removed the fuel lines from the injectors and ran the fuel into a container to remove any bad fuel from the lines. The fuel that came out was dark at first but cleared up. What I didn't realize was that I very well might have gunked up the fuel pump at this point.
Additionally, I saw that I have an Airtex pump installed, so it's not surprising if it failed. I ordered a GM pump.
My only hope now is that the remaining fuel has not gummed up the lines and doesn't gum up the new pump. Unfortunately I'm not really equipped to drain the tank and get rid of the fuel. Judging by the look and smell of the fuel coming out of the lines right now, I think and hope I'm in the clear.
I couldn't remove the quick connect fittings to the pump and am waiting on the tools to come along with the new pump. There is not a lot of clearance between the lines and the plastic molding at the sender. I'm hoping the tool does the job and I don't have to do something drastic like cut the plastic fittings at the sender.
Truck will start with starting fluid, so I'm pretty sure it's not a spark issue. At this point it can only be fuel delivery.
I checked the wiring diagrams again and saw that there is a fuse going to the injectors. Checked this fuse, and it appeared to be black with grime. Cleaned it and tested voltage, good voltage. Checked voltage at injectors, good voltage.
Ran a fused jumper wire at fuel relay terminal to run fuel pump indefinitely and tried starting the car, no change. This tells me it's not a wiring or relay issue.
Removed the bolts from the bed and lifted it enough with a jack to get in there. Removed the wiring to the pump and tested voltage. Good voltage.
Removed clamp from fuel pump and lifted it out of the tank some. It looks like the hose going from the pump to the sender is pretty dark, so the assembly might have gotten gummed up and restricted.
When I first rebuilt the engine I removed the fuel lines from the injectors and ran the fuel into a container to remove any bad fuel from the lines. The fuel that came out was dark at first but cleared up. What I didn't realize was that I very well might have gunked up the fuel pump at this point.
Additionally, I saw that I have an Airtex pump installed, so it's not surprising if it failed. I ordered a GM pump.
My only hope now is that the remaining fuel has not gummed up the lines and doesn't gum up the new pump. Unfortunately I'm not really equipped to drain the tank and get rid of the fuel. Judging by the look and smell of the fuel coming out of the lines right now, I think and hope I'm in the clear.
I couldn't remove the quick connect fittings to the pump and am waiting on the tools to come along with the new pump. There is not a lot of clearance between the lines and the plastic molding at the sender. I'm hoping the tool does the job and I don't have to do something drastic like cut the plastic fittings at the sender.