My truck is finally back on the road. I never definitively knew what the problem was so the dry rotted connect hose at the gas tank must have been the problem.
I tested the fuel pump with hoses in and out of a gas can. The pump does in fact pull fairly well but obviously you have to have a vacuum on the line into the tank for it to pull gas.
Along with kludging up a filter sock I also had to find that asphault/paper tape insulation and I couldn't find anybody that sells that either. I wound up using foil faced peel and stick window flashing from Lowes. A little trimming and double layering and it worked fine.
The engine is running different(better) than before. After running it a while it had a tendency to want to idle up. Now it stays rock solid. It also seems to crank a bit easier when cold. I don't know what that was unless having the fuel pump that close to the carb might have been overpowering the float a little. It did gas smoke some on initial crank up. I had also noticed it starting to surge and go flat on me going down the road before the fix. That was probably from fluxuating fuel pressure. All that is gone now.
I had a couple of final challenges putting it back together. Once I got the tank in place and bolted up, the filler neck hose was crimped shut. I tried to pop it open with a bit of curved rebar but no joy. I pulled the tank yet again and finally figured out that the hose had developed a memory and I had it clamped on upside down. Rotated it around and it was fine. Since I was doing this by myself I used a couple of jack stands with pieces of 1 x 6 on top to hold the tank up so I could work it into place. It would be a lot easier with a second person.
I discovered that the screw on filter on the front of the carb was leaking gas where it was crimped together.
I didn't bleed on this one so technically I guess it was not a project. I do have 1 smashed finger though. Does that count?
I tested the fuel pump with hoses in and out of a gas can. The pump does in fact pull fairly well but obviously you have to have a vacuum on the line into the tank for it to pull gas.
Along with kludging up a filter sock I also had to find that asphault/paper tape insulation and I couldn't find anybody that sells that either. I wound up using foil faced peel and stick window flashing from Lowes. A little trimming and double layering and it worked fine.
The engine is running different(better) than before. After running it a while it had a tendency to want to idle up. Now it stays rock solid. It also seems to crank a bit easier when cold. I don't know what that was unless having the fuel pump that close to the carb might have been overpowering the float a little. It did gas smoke some on initial crank up. I had also noticed it starting to surge and go flat on me going down the road before the fix. That was probably from fluxuating fuel pressure. All that is gone now.
I had a couple of final challenges putting it back together. Once I got the tank in place and bolted up, the filler neck hose was crimped shut. I tried to pop it open with a bit of curved rebar but no joy. I pulled the tank yet again and finally figured out that the hose had developed a memory and I had it clamped on upside down. Rotated it around and it was fine. Since I was doing this by myself I used a couple of jack stands with pieces of 1 x 6 on top to hold the tank up so I could work it into place. It would be a lot easier with a second person.
I discovered that the screw on filter on the front of the carb was leaking gas where it was crimped together.
I didn't bleed on this one so technically I guess it was not a project. I do have 1 smashed finger though. Does that count?