fuel delivery problem (2)

Have had similar problems with fuel delivery on my 65. The tank had been internally coated at one time and all of that had come loose and was lying around casually near the bottom of the tank. The fuel filter on the inlet line from the tank was long gone. I disconnected the line just outside the tank, took the line/gauge/filter out (this is done by rotating a metal ring on the outside of the tank to allow the assembly to be lifted out). My sending unit for the fuel gauge was bad and the fix for that is another story. However, relating to your problems, that piece of tubing from the filter to the connector outside the tank was very badly plugged with debris (probably from the bad tank lining material). So, first I would suggest you check the epoxy liner to make sure it's still in place where it belongs. Second, clean out the piece of fuel line (can be done with a piece of wire) and then place a new fuel filter on the inlet. Now comes the commercial part of this message- these filters are no longer available and I got so tired of searching that I made a small run of new ones (the advantage of running a machine shop!). These are rectangular in shape, about 1/2 X 3/4 X 6 with solid ends and 200 mesh stainless steel screen. One end is tapped for a 1/8 pipe fitting. Being all stainless, these should last forever, and can be easily removed and blown out with an airline if stuff should get lodged on the outside of the mesh.All this can be yours for only $50.00!

Philippe Courant <accf-club@xxxxxxxxxxxxxxxx> wrote:

Hi,
This evening i made several tests and checks about this *°#"/! fuel line. I removed 5 gallons from the tank (with the electric pump so it works well even to pull 1 ft higher ..), re-tried with pump attached to sending unit tube : same results: bubbles in the (clear) hose, very little and erratic flow in the jar.
So, late test, i sent 50 PSI in the tank through the sending tube. "vraoum" i heard + noise of bubbles. I re-attached the pump and bingo, lot of fuel ( 5 quarts in 1 mn), no bubbles , etc... So there is "something" in the tank or at end of sending unit which plugs the tube !!

What i don't understand is that the tank was cleaned and coated with special epoxy 3 years ago !!! It wasn't rusty or dirty before but i cleaned it perfectly before coating !!

I haven't yet re-attached mechanical (or electrical) pump to fuel line but i think the problem is solved. But now i must drain the 15-20 gallons of gas before removing the tank ...

--

Philippe COURANT (Pau, France)- Webmaster des sites ACCF et C-I-F

Imperial 1957 Crown convertible

Buick 1996 Roadmaster wagon

- American Car Club de France (ACCF) : http://www.accf.com

- Chrysler Imperial France (C-I-F) : http://www.ifrance.com/c-i-f

- Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad

- SportsCars : http://www.ifrance.com/accf-sprtcar