8N no start condition

I recently did a tune up on my 48 front mount 8N, including new elbow strainer, new sediment bowl, new coil, points, condenser, plugs, wires, cap, and rotor. Engine ran fine after work, but not as well as I had hoped, felt weak like it did before. I have 105 - 115 compression on cyl #s 1,3,4 but # 2 is low (45). After a few days of work I parked her for about 3 days. I tried to start her and she ran for about three to five seconds before dying. No start since then. Pulled plugs, they were black with ash, cleaned em up, no start. Pulled distributer, I accidently set points to 0.025 (oops), reset to 0.015. Surely she'll start this time! Nope. I have fuel to carb bowl and I do have fairly good blue spark. Timing? I think I would at least get a backfire if timing was off (rotor backwards), but I am not. I don't know where to go from here, could the voltage regulator be the problem even though I have spark? I've been running on three cylinders for a year now, so that shouldn't be the problem either. So, what little thing did I overlook??? Charging battery up today, maybe It just isn't spinning quick enough after being apart for a week or so. Anyhows, any help you could administer would be most appreciated.

Thanks, Jim

Flat-head Fords can be made to run with bad head gaskets, but only at the cost of causing further damage. The longer you go without fixing that gasket, the worse the engine will run.

Nowadays, with these tractors increasing in value all the time, it seems especially pointless to keep running the old tractor with a blown gasket when such a great potential for disaster looms from doing so.

In other words, messing with the points, etc., while a head gasket is bad (or while there is forty-five pounds on one cylinder and a hundred and fifteen on another for WHAT EVER reason) is like fussing at a patient with terminal cancer for eating too much fatty food.