WD wont stay running.

I have a WD that was running well until about a week ago. it at first appeared to be an electrical problem, so I have since replaced the spark plugs, wires, distributor cap, points condenser, coil. it fired up and ran for a couple minutes but if I put it in any gear but 1st it died. so I thought fuel problem, I then start from the glass fuel bowl and worked to the carburetor, seem to have a good flow of fuel, tried adjusting the main fuel jet, and the ideal screw. Now it will fire run for a few seconds(<5) but wont continue running. Now my understanding is the firing order is 1243, and the cylinders are numbered 1-4 starting with the cylinder closest to the radiator. what am I missing.

it pulls suction

Jryan,

So I opened the main drain on the carb and let all the gas(about 4gals) run out of the tank, had a pretty steady flow the entire time I watched it(walked away a couple times to do other things). thjs gave me the added bonus of two things, I went ahead and took the glass sediment bowl of and of course int the top inlet there was a couple leaves or really thin pieces of metal. so while it was off I also flushed the tank to see if I could get anything else inside the tank out and then I am letting it dry out and will put fresh gas in tomorrow and see what happens. someone did ask if if set out for a while, not really long it sat for two days. when I get it running and out in the sun I will snap a few pics.

We had a problem similar with a B   Ran fine then stopped.  Turned out to be a rag in the gas tank. - the customer lost the gas cap and put a rag in it to keep the dust out.  Rag fell into the tank and the customer forgot about it.  

Sorry this took so long. I had to take my tractor to a mechanic to have it fixed, turns out it was jjst out of timing. whether this happened as I replaced parts(I was pretty careful to put the plug wires back on where i took them off) ir trhe mechanic said that the distributor could have been put on different then it would have not had the same timing. The only proble. is now that I can only kkeep it running if I keep the choke open. The mechanic says he things its from chunks of rust coming out of the gas tank and clogging the carb.

Looks like it is time to remove and clean the carburetor if you have not already.   

Having to have the choke closed to keep it running, when warm, is a sign of a blockage in the carb, provided you have a good fuel flow as you have posted.   There are small passages in the carb body that spray carb cleaner and compressed air won't always clear.  If you do not have a set of oxy/acetylene torch tip cleaners, stop by a store that carries welding supplies and purchase a set.  Use them to gently run through all the holes/ports/jets to remove deposits, along with the carb cleaner and compressed air.  When adjusting the float level, I use the appropriate size drill bit as a gauge, rather than the paper measuring tool that comes in most carb kits.