You've already diagnosed your problem when you stated there was no gas coming out of the pump after cranking the engine.
1- fuel pick up in tank not damaged, rotted, broken, etc
2- adequate fuel in tank
3- fuel line from tank clean and secure fittings
4- fuel pump operational
5- crank engine,,,,,, fuel comes out
If not, go back to tank and start with the internal fuel pickup. It not uncommon for this part to be damaged where fuel will not leave tank.
Yes you should have fuel coming out from the line from fuel pump to carb. Is the glass sediment bowl filling up with Fuel? If not then you are not pulling from tank. If no fuel coming from the fuel pump to carb line then the problem is on that side of the fuel pump.You say you replaced the diaphragm but maybe re-check. The rubber on these is several layers thick and they can become internally separated.With the pump on the bench you should be able to move the arm and hear(and feel) pressure escaping. Make sure the rocker arm looks okay. It has 2 cup and springs that can be inspected. These pumps work at so low a pressure( maybe a couple pounds), but you should be able to feel it. Let us know. Ross
I recall the old girl would quit for no seemly reason on the road. We waited few min and she would fire up and run fine rest of the day. We figured vapour lock in gas line from hot day, but not the case this year with constant rain and few warm days.
The 32 spluttered doing similar thing but using WD40 which is highly flammable, into the carb mouth, when we first tried to start it, until discovering that two pin hole air holes in the carb neck were blocked. Mine has the orig J4A on it for 32. Once we opened those she roared to life after 40 + years.
Where Are You From? Ottawa Ontario
Do You own a car built by Durant? Dominion built 1932 614 sedan
So got it to start today! problem was at the fuel pump as suspected. The problem was actually twofold...First there was a small obstruction in the line between the pump and the carb. Gave a bit of a suck and all of a sudden I could hear some air movement but not much. I then realized that the cork gasket to the site bowl had dried out so I could hear air loss from there, Changed that and boom she starts.
NOW FOR THE NEXT ISSUE! running cold all was perfect had it running in the driveway 5-10 mins purring like a kitten. Took it out to put air in the tires and by the time I got there (2 blocks) the carb was leaking alot of gas. My carb is an older Zenith that seems to have only one adjustment screw....
Can I pick your brains again? Carb floats? adjustments?