Re: Gas tank pick-up tube/sending unit assy for '39???

Posted by Packard Newbie On 2018/5/17 11:58:13

Thanks Dave & Howard. Yes!, those are the pics I was looking for. If I can, let me just update my progress on the stalling issue. After replacing so many things and not having it affect the stalling, I started looking from the fuel pressure regulator, backwards. I had mentioned previously that I had replaced the fuel lines, and what I had done was replace all the rubber hose where it connected to the steel line. I was advised to change the steel line, which I did and it definitely improved the stalling. Now, when I start the car, the fuel filter fills up immediately and the car starts and runs great. We have the pressure reg. set at 3 PSI and the problem now is the car runs the fuel filter out of gas. If the fuel line from the tank is removed, there is a burst of AIR pressure with very little fuel?!?!?!? Our deduction there is that the pump, which is mounted right at the tank, must be sucking in air on the intake side and pressurizing the fuel line when the carb needle seats and doesn't allow gas in. If the line from the tank is removed at the pressure reg (on the firewall) and the pump is activated, a steady, robust stream of straight fuel comes out. Any thoughts or ideas??? I DO feel we are getting very close to fixing the problem. With the new steel fuel line causing much less flow restriction, the car didn't stall doing the same 'circuit' we did before, where it stalled every time. However, with the filter showing a diminishing gas level, I am certain if I took it out on the highway, it would starve for fuel. Way back when I first started to try and diagnose this issue, I dropped the tank and found that the seam at the flange of the pickup tube/sending unit was loose. Initially I thought I had found the problem and that it was sucking air there. Upon further investigation, I determined the pickup tube was one piece going through the flange and when I put my finger over the lower end and sucked on the outflow end - it seemed airtight. Maybe there is a hairline crack there through which air is sweeping when the pump is on max-draw?? Anyway, that's where we're at....